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{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeOperators #-}
module T10134a where
import GHC.TypeLits
data Vec :: Nat -> * -> * where
Nil :: Vec 0 a
(:>) :: a -> Vec n a -> Vec (n + 1) a
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