i proof.gfcm
rf ex1.txt | p -tr -lang=ProofSymb | l -lang=ProofEng
rf ex2.txt | p -tr -lang=ProofSymb | l -lang=ProofEng
rf ex4.txt | p -tr -lang=ProofSymb | l -lang=ProofEng
rf ex1eng.txt | p -tr -lang=ProofEng | l -lang=ProofSymb
rf ex2eng.txt | p -tr -lang=ProofEng | l -lang=ProofSymb
rf ex4eng.txt | p -tr -lang=ProofEng | l -lang=ProofSymb