class T10891.C (a_0 :: *)
    where T10891.f :: a_0 -> GHC.Types.Int
class T10891.C' (a_0 :: *)
    where type T10891.F (a_0 :: *) :: *
          type T10891.F a_0 = a_0
          T10891.f' :: a_0 -> GHC.Types.Int
instance T10891.C' GHC.Types.Int
class T10891.C'' (a_0 :: *)
    where data T10891.Fd (a_0 :: *) :: *
instance T10891.C'' GHC.Types.Int