[1 of 2] Compiling SafeLang14_A     ( SafeLang14_A.hs, SafeLang14_A.o )
[2 of 2] Compiling Main             ( SafeLang14.hs, SafeLang14.o )

SafeLang14.hs:14:10:
    Typeable instances can only be derived in Safe Haskell.
    Replace the following instance:
      instance [safe] Typeable G

SafeLang14.hs:17:10:
    Typeable instances can only be derived in Safe Haskell.
    Replace the following instance:
      instance [safe] Typeable P