diff --git a/substrate/frame/support/procedural/src/key_prefix.rs b/substrate/frame/support/procedural/src/key_prefix.rs
new file mode 100644
index 0000000000..17c310c2bc
--- /dev/null
+++ b/substrate/frame/support/procedural/src/key_prefix.rs
@@ -0,0 +1,95 @@
+// This file is part of Substrate.
+
+// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use proc_macro2::{Span, TokenStream};
+use quote::{ToTokens, format_ident, quote};
+use syn::{Ident, Result};
+
+const MAX_IDENTS: usize = 18;
+
+pub fn impl_key_prefix_for_tuples(input: proc_macro::TokenStream) -> Result<TokenStream> {
+	if !input.is_empty() {
+		return Err(syn::Error::new(Span::call_site(), "No arguments expected"));
+	}
+
+	let mut all_trait_impls = TokenStream::new();
+
+	for i in 2..=MAX_IDENTS {
+		let current_tuple = (0..i)
+			.map(|n| Ident::new(&format!("Tuple{}", n), Span::call_site()))
+			.collect::<Vec<_>>();
+
+		for prefix_count in 1..i {
+			let (prefixes, suffixes) = current_tuple.split_at(prefix_count);
+
+			let hashers = current_tuple.iter().map(|ident| format_ident!("Hasher{}", ident)).collect::<Vec<_>>();
+			let kargs = prefixes.iter().map(|ident| format_ident!("KArg{}", ident)).collect::<Vec<_>>();
+			let partial_keygen = generate_keygen(prefixes);
+			let suffix_keygen = generate_keygen(suffixes);
+			let suffix_tuple = generate_tuple(suffixes);
+
+			let trait_impls = quote!{
+				impl<
+					#(#current_tuple: FullCodec,)*
+					#(#hashers: StorageHasher,)*
+					#(#kargs: EncodeLike<#prefixes>),*
+				> HasKeyPrefix<( #( #kargs, )* )> for ( #( Key<#hashers, #current_tuple>, )* ) {
+					type Suffix = #suffix_tuple;
+
+					fn partial_key(prefix: ( #( #kargs, )* )) -> Vec<u8> {
+						<#partial_keygen>::final_key(prefix)
+					}
+				}
+
+				impl<
+					#(#current_tuple: FullCodec,)*
+					#(#hashers: ReversibleStorageHasher,)*
+					#(#kargs: EncodeLike<#prefixes>),*
+				> HasReversibleKeyPrefix<( #( #kargs, )* )> for ( #( Key<#hashers, #current_tuple>, )* ) {
+					fn decode_partial_key(key_material: &[u8]) -> Result<Self::Suffix, codec::Error> {
+						<#suffix_keygen>::decode_final_key(key_material).map(|k| k.0)
+					}
+				}
+			};
+
+			all_trait_impls.extend(trait_impls);
+		}
+	}
+
+	Ok(all_trait_impls)
+}
+
+fn generate_tuple(idents: &[Ident]) -> TokenStream {
+	if idents.len() == 1 {
+		idents[0].to_token_stream()
+	} else {
+		quote!((#(#idents),*))
+	}
+}
+
+fn generate_keygen(idents: &[Ident]) -> TokenStream {
+	if idents.len() == 1 {
+		let key = &idents[0];
+		let hasher = format_ident!("Hasher{}", key);
+
+		quote!(Key<#hasher, #key>)
+	} else {
+		let hashers = idents.iter().map(|ident| format_ident!("Hasher{}", ident));
+
+		quote!((#(Key<#hashers, #idents>),*))
+	}
+}
diff --git a/substrate/frame/support/procedural/src/lib.rs b/substrate/frame/support/procedural/src/lib.rs
index 6b163ed5d7..13b3f317e1 100644
--- a/substrate/frame/support/procedural/src/lib.rs
+++ b/substrate/frame/support/procedural/src/lib.rs
@@ -29,6 +29,7 @@ mod clone_no_bound;
 mod partial_eq_no_bound;
 mod default_no_bound;
 mod max_encoded_len;
+mod key_prefix;
 
 pub(crate) use storage::INHERENT_INSTANCE_NAME;
 use proc_macro::TokenStream;
@@ -451,3 +452,10 @@ pub(crate) const NUMBER_OF_INSTANCE: u8 = 16;
 pub fn derive_max_encoded_len(input: TokenStream) -> TokenStream {
 	max_encoded_len::derive_max_encoded_len(input)
 }
+
+/// This macro is meant to be used by frame-support only.
+/// It implements the trait `HasKeyPrefix` and `HasReversibleKeyPrefix` for tuple of `Key`.
+#[proc_macro]
+pub fn impl_key_prefix_for_tuples(input: TokenStream) -> TokenStream {
+	key_prefix::impl_key_prefix_for_tuples(input).unwrap_or_else(syn::Error::into_compile_error).into()
+}
diff --git a/substrate/frame/support/src/storage/types/key.rs b/substrate/frame/support/src/storage/types/key.rs
index 79fc33a24e..a770d1b0fc 100755
--- a/substrate/frame/support/src/storage/types/key.rs
+++ b/substrate/frame/support/src/storage/types/key.rs
@@ -246,7 +246,7 @@ impl ReversibleKeyGenerator for Tuple {
 	fn decode_final_key(key_material: &[u8]) -> Result<(Self::Key, &[u8]), codec::Error> {
 		let mut current_key_material = key_material;
 		Ok((
-			(for_tuples! {
+			(for_tuples!{
 				#({
 					let (key, material) = Tuple::decode_final_key(current_key_material)?;
 					current_key_material = material;
@@ -270,735 +270,4 @@ pub trait HasReversibleKeyPrefix<P>: ReversibleKeyGenerator + HasKeyPrefix<P> {
 	fn decode_partial_key(key_material: &[u8]) -> Result<Self::Suffix, codec::Error>;
 }
 
-macro_rules! impl_key_prefix_for {
-	(($($keygen:ident),+), ($($prefix:ident),+), ($($suffix:ident),+)) => {
-		paste! {
-			impl<
-				$($keygen: FullCodec,)+
-				$( [<$keygen $keygen>]: StorageHasher,)+
-				$( [<KArg $prefix>]: EncodeLike<$prefix> ),+
-			> HasKeyPrefix<($( [<KArg $prefix>] ),+)> for ($(Key<[<$keygen $keygen>], $keygen>),+) {
-				type Suffix = ($($suffix),+);
-
-				fn partial_key(prefix: ($( [<KArg $prefix>] ),+)) -> Vec<u8> {
-					<($(Key<[<$prefix $prefix>], $prefix>),+)>::final_key(prefix)
-				}
-			}
-
-			impl<
-				$($keygen: FullCodec,)+
-				$( [<$keygen $keygen>]: ReversibleStorageHasher,)+
-				$( [<KArg $prefix>]: EncodeLike<$prefix> ),+
-			> HasReversibleKeyPrefix<($( [<KArg $prefix>] ),+)> for
-				($(Key<[<$keygen $keygen>], $keygen>),+)
-			{
-				fn decode_partial_key(key_material: &[u8]) -> Result<Self::Suffix, codec::Error> {
-					<($(Key<[<$suffix $suffix>], $suffix>),+)>::decode_final_key(key_material).map(|k| k.0)
-				}
-			}
-		}
-	};
-	(($($keygen:ident),+), $prefix:ident, ($($suffix:ident),+)) => {
-		paste! {
-			impl<
-				$($keygen: FullCodec,)+
-				$( [<$keygen $keygen>]: StorageHasher,)+
-				[<KArg $prefix>]: EncodeLike<$prefix>
-			> HasKeyPrefix<( [<KArg $prefix>] ,)> for ($(Key<[<$keygen $keygen>], $keygen>),+) {
-				type Suffix = ($($suffix),+);
-
-				fn partial_key(prefix: ( [<KArg $prefix>] ,)) -> Vec<u8> {
-					<Key<[<$prefix $prefix>], $prefix>>::final_key(prefix)
-				}
-			}
-
-			impl<
-				$($keygen: FullCodec,)+
-				$( [<$keygen $keygen>]: ReversibleStorageHasher,)+
-				[<KArg $prefix>]: EncodeLike<$prefix>
-			> HasReversibleKeyPrefix<( [<KArg $prefix>] ,)> for
-				($(Key<[<$keygen $keygen>], $keygen>),+)
-			{
-				fn decode_partial_key(key_material: &[u8]) -> Result<Self::Suffix, codec::Error> {
-					<($(Key<[<$suffix $suffix>], $suffix>),+)>::decode_final_key(key_material).map(|k| k.0)
-				}
-			}
-		}
-	};
-	(($($keygen:ident),+), ($($prefix:ident),+), $suffix:ident) => {
-		paste! {
-			impl<
-				$($keygen: FullCodec,)+
-				$( [<$keygen $keygen>]: StorageHasher,)+
-				$( [<KArg $prefix>]: EncodeLike<$prefix>),+
-			> HasKeyPrefix<($( [<KArg $prefix>] ),+)> for ($(Key<[<$keygen $keygen>], $keygen>),+) {
-				type Suffix = $suffix;
-
-				fn partial_key(prefix: ($( [<KArg $prefix>] ),+)) -> Vec<u8> {
-					<($(Key<[<$prefix $prefix>], $prefix>),+)>::final_key(prefix)
-				}
-			}
-
-			impl<
-				$($keygen: FullCodec,)+
-				$( [<$keygen $keygen>]: ReversibleStorageHasher,)+
-				$( [<KArg $prefix>]: EncodeLike<$prefix> ),+
-			> HasReversibleKeyPrefix<($( [<KArg $prefix>] ),+)> for
-				($(Key<[<$keygen $keygen>], $keygen>),+)
-			{
-				fn decode_partial_key(key_material: &[u8]) -> Result<Self::Suffix, codec::Error> {
-					<Key<[<$suffix $suffix>], $suffix>>::decode_final_key(key_material).map(|k| k.0)
-				}
-			}
-		}
-	};
-}
-
-impl<A, B, X, Y, KArg> HasKeyPrefix<(KArg,)> for (Key<X, A>, Key<Y, B>)
-where
-	A: FullCodec,
-	B: FullCodec,
-	X: StorageHasher,
-	Y: StorageHasher,
-	KArg: EncodeLike<A>,
-{
-	type Suffix = B;
-
-	fn partial_key(prefix: (KArg,)) -> Vec<u8> {
-		<Key<X, A>>::final_key(prefix)
-	}
-}
-
-impl<A, B, X, Y, KArg> HasReversibleKeyPrefix<(KArg,)> for (Key<X, A>, Key<Y, B>)
-where
-	A: FullCodec,
-	B: FullCodec,
-	X: ReversibleStorageHasher,
-	Y: ReversibleStorageHasher,
-	KArg: EncodeLike<A>,
-{
-	fn decode_partial_key(key_material: &[u8]) -> Result<B, codec::Error> {
-		<Key<Y, B>>::decode_final_key(key_material).map(|k| k.0)
-	}
-}
-
-impl_key_prefix_for!((A, B, C), (A, B), C);
-impl_key_prefix_for!((A, B, C), A, (B, C));
-impl_key_prefix_for!((A, B, C, D), (A, B, C), D);
-impl_key_prefix_for!((A, B, C, D), (A, B), (C, D));
-impl_key_prefix_for!((A, B, C, D), A, (B, C, D));
-impl_key_prefix_for!((A, B, C, D, E), (A, B, C, D), E);
-impl_key_prefix_for!((A, B, C, D, E), (A, B, C), (D, E));
-impl_key_prefix_for!((A, B, C, D, E), (A, B), (C, D, E));
-impl_key_prefix_for!((A, B, C, D, E), A, (B, C, D, E));
-impl_key_prefix_for!((A, B, C, D, E, F), (A, B, C, D, E), F);
-impl_key_prefix_for!((A, B, C, D, E, F), (A, B, C, D), (E, F));
-impl_key_prefix_for!((A, B, C, D, E, F), (A, B, C), (D, E, F));
-impl_key_prefix_for!((A, B, C, D, E, F), (A, B), (C, D, E, F));
-impl_key_prefix_for!((A, B, C, D, E, F), A, (B, C, D, E, F));
-impl_key_prefix_for!((A, B, C, D, E, F, G), (A, B, C, D, E, F), G);
-impl_key_prefix_for!((A, B, C, D, E, F, G), (A, B, C, D, E), (F, G));
-impl_key_prefix_for!((A, B, C, D, E, F, G), (A, B, C, D), (E, F, G));
-impl_key_prefix_for!((A, B, C, D, E, F, G), (A, B, C), (D, E, F, G));
-impl_key_prefix_for!((A, B, C, D, E, F, G), (A, B), (C, D, E, F, G));
-impl_key_prefix_for!((A, B, C, D, E, F, G), A, (B, C, D, E, F, G));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H), (A, B, C, D, E, F, G), H);
-impl_key_prefix_for!((A, B, C, D, E, F, G, H), (A, B, C, D, E, F), (G, H));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H), (A, B, C, D, E), (F, G, H));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H), (A, B, C, D), (E, F, G, H));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H), (A, B, C), (D, E, F, G, H));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H), (A, B), (C, D, E, F, G, H));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H), A, (B, C, D, E, F, G, H));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H, I), (A, B, C, D, E, F, G, H), I);
-impl_key_prefix_for!((A, B, C, D, E, F, G, H, I), (A, B, C, D, E, F, G), (H, I));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H, I), (A, B, C, D, E, F), (G, H, I));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H, I), (A, B, C, D, E), (F, G, H, I));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H, I), (A, B, C, D), (E, F, G, H, I));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H, I), (A, B, C), (D, E, F, G, H, I));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H, I), (A, B), (C, D, E, F, G, H, I));
-impl_key_prefix_for!((A, B, C, D, E, F, G, H, I), A, (B, C, D, E, F, G, H, I));
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J),
-	(A, B, C, D, E, F, G, H, I),
-	J
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J),
-	(A, B, C, D, E, F, G, H),
-	(I, J)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J),
-	(A, B, C, D, E, F, G),
-	(H, I, J)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J),
-	(A, B, C, D, E, F),
-	(G, H, I, J)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J),
-	(A, B, C, D, E),
-	(F, G, H, I, J)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J),
-	(A, B, C, D),
-	(E, F, G, H, I, J)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J),
-	(A, B, C),
-	(D, E, F, G, H, I, J)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J),
-	(A, B),
-	(C, D, E, F, G, H, I, J)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J),
-	A,
-	(B, C, D, E, F, G, H, I, J)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(A, B, C, D, E, F, G, H, I, J),
-	K
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(A, B, C, D, E, F, G, H, I),
-	(J, K)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(A, B, C, D, E, F, G, H),
-	(I, J, K)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(A, B, C, D, E, F, G),
-	(H, I, J, K)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(A, B, C, D, E, F),
-	(G, H, I, J, K)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(A, B, C, D, E),
-	(F, G, H, I, J, K)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(A, B, C, D),
-	(E, F, G, H, I, J, K)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(A, B, C),
-	(D, E, F, G, H, I, J, K)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(A, B),
-	(C, D, E, F, G, H, I, J, K)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K),
-	A,
-	(B, C, D, E, F, G, H, I, J, K)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(A, B, C, D, E, F, G, H, I, J, K),
-	L
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(A, B, C, D, E, F, G, H, I, J),
-	(K, L)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(A, B, C, D, E, F, G, H, I),
-	(J, K, L)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(A, B, C, D, E, F, G, H),
-	(I, J, K, L)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(A, B, C, D, E, F, G),
-	(H, I, J, K, L)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(A, B, C, D, E, F),
-	(G, H, I, J, K, L)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(A, B, C, D, E),
-	(F, G, H, I, J, K, L)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(A, B, C, D),
-	(E, F, G, H, I, J, K, L)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(A, B, C),
-	(D, E, F, G, H, I, J, K, L)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(A, B),
-	(C, D, E, F, G, H, I, J, K, L)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	A,
-	(B, C, D, E, F, G, H, I, J, K, L)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	M
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B, C, D, E, F, G, H, I, J),
-	(K, L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B, C, D, E, F, G, H, I),
-	(J, K, L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B, C, D, E, F, G, H),
-	(I, J, K, L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B, C, D, E, F, G),
-	(H, I, J, K, L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B, C, D, E, F),
-	(G, H, I, J, K, L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B, C, D, E),
-	(F, G, H, I, J, K, L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B, C, D),
-	(E, F, G, H, I, J, K, L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B, C),
-	(D, E, F, G, H, I, J, K, L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(A, B),
-	(C, D, E, F, G, H, I, J, K, L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	A,
-	(B, C, D, E, F, G, H, I, J, K, L, M)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	N
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C, D, E, F, G, H, I, J),
-	(K, L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C, D, E, F, G, H, I),
-	(J, K, L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C, D, E, F, G, H),
-	(I, J, K, L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C, D, E, F, G),
-	(H, I, J, K, L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C, D, E, F),
-	(G, H, I, J, K, L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C, D, E),
-	(F, G, H, I, J, K, L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C, D),
-	(E, F, G, H, I, J, K, L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B, C),
-	(D, E, F, G, H, I, J, K, L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(A, B),
-	(C, D, E, F, G, H, I, J, K, L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	A,
-	(B, C, D, E, F, G, H, I, J, K, L, M, N)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	O
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D, E, F, G, H, I, J),
-	(K, L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D, E, F, G, H, I),
-	(J, K, L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D, E, F, G, H),
-	(I, J, K, L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D, E, F, G),
-	(H, I, J, K, L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D, E, F),
-	(G, H, I, J, K, L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D, E),
-	(F, G, H, I, J, K, L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C, D),
-	(E, F, G, H, I, J, K, L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B, C),
-	(D, E, F, G, H, I, J, K, L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(A, B),
-	(C, D, E, F, G, H, I, J, K, L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	A,
-	(B, C, D, E, F, G, H, I, J, K, L, M, N, O)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	P
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E, F, G, H, I, J),
-	(K, L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E, F, G, H, I),
-	(J, K, L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E, F, G, H),
-	(I, J, K, L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E, F, G),
-	(H, I, J, K, L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E, F),
-	(G, H, I, J, K, L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D, E),
-	(F, G, H, I, J, K, L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C, D),
-	(E, F, G, H, I, J, K, L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B, C),
-	(D, E, F, G, H, I, J, K, L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(A, B),
-	(C, D, E, F, G, H, I, J, K, L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	A,
-	(B, C, D, E, F, G, H, I, J, K, L, M, N, O, P)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	Q
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F, G, H, I, J),
-	(K, L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F, G, H, I),
-	(J, K, L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F, G, H),
-	(I, J, K, L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F, G),
-	(H, I, J, K, L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E, F),
-	(G, H, I, J, K, L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D, E),
-	(F, G, H, I, J, K, L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C, D),
-	(E, F, G, H, I, J, K, L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B, C),
-	(D, E, F, G, H, I, J, K, L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	(A, B),
-	(C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	A,
-	(B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q),
-	R
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P),
-	(Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O),
-	(P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N),
-	(O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G, H, I, J, K, L, M),
-	(N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G, H, I, J, K, L),
-	(M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G, H, I, J, K),
-	(L, M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G, H, I, J),
-	(K, L, M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G, H, I),
-	(J, K, L, M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G, H),
-	(I, J, K, L, M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F, G),
-	(H, I, J, K, L, M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E, F),
-	(G, H, I, J, K, L, M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D, E),
-	(F, G, H, I, J, K, L, M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C, D),
-	(E, F, G, H, I, J, K, L, M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B, C),
-	(D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	(A, B),
-	(C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R)
-);
-impl_key_prefix_for!(
-	(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R),
-	A,
-	(B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R)
-);
+frame_support_procedural::impl_key_prefix_for_tuples!();