MAYBE
75.73/30.36	MAYBE
75.73/30.36	
75.73/30.36	Problem:
75.73/30.36	 a(x1) -> b(x1)
75.73/30.36	 a(b(b(x1))) -> c(x1)
75.73/30.36	 a(c(x1)) -> c(b(a(a(x1))))
75.73/30.36	
75.73/30.36	Proof:
75.73/30.36	 Open
75.73/30.36	EOF