module ClassParens where class LiftingMonad (trans :: MTrans) where proof :: Monad m :- Monad (trans m) class LiftingMonad2 ((trans :: MTrans)) where proof :: Monad m :- Monad (trans m) data Nat (t :: NatKind) where ZeroNat :: Nat Zero SuccNat :: Nat t -> Nat (Succ t)