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TYPE SIGNATURES
TYPE CONSTRUCTORS
  class C1 a where
    meth1 :: a -> a
    {-# MINIMAL meth1 #-}
  class C2 a b where
    meth2 :: a ~ b => a -> b
    {-# MINIMAL meth2 #-}
  class C3 a b where
    type family F3 b :: * open
    meth3 :: a -> F3 b -> F3 b
    {-# MINIMAL meth3 #-}
  class C4 a b where
    meth4 :: a -> F4 b -> F4 b
    {-# MINIMAL meth4 #-}
  type family F4 a :: * open
  type Syn1 a = F4 a
  type Syn2 a = [a]
COERCION AXIOMS
  axiom Roles3.NTCo:C1 :: C1 a = a -> a
  axiom Roles3.NTCo:C2 :: C2 a b = (a ~ b) => a -> b
  axiom Roles3.NTCo:C3 :: C3 a b = a -> F3 b -> F3 b
  axiom Roles3.NTCo:C4 :: C4 a b = a -> F4 b -> F4 b
Dependent modules: []
Dependent packages: [base-4.9.0.0, ghc-prim-0.4.0.0,
                     integer-gmp-1.0.0.0]

==================== Typechecker ====================
Roles3.$tcC4
  = TyCon
      12861862461396457184##
      6389612623460961504##
      Roles3.$trModule
      (TrNameS "C4"#)
Roles3.$tcC3
  = TyCon
      5998139369941479154##
      6816352641934636458##
      Roles3.$trModule
      (TrNameS "C3"#)
Roles3.$tcC2
  = TyCon
      8833962732139387711##
      7891126688522429937##
      Roles3.$trModule
      (TrNameS "C2"#)
Roles3.$tcC1
  = TyCon
      16242970448469140073##
      10229725431456576413##
      Roles3.$trModule
      (TrNameS "C1"#)
Roles3.$trModule = Module (TrNameS "main"#) (TrNameS "Roles3"#)