MAYBE
133.89/55.32	MAYBE
133.89/55.32	
133.89/55.32	Problem:
133.89/55.32	 a(x1) -> b(x1)
133.89/55.32	 b(b(c(x1))) -> c(a(c(b(b(x1)))))
133.89/55.32	 c(c(x1)) -> x1
133.89/55.32	
133.89/55.32	Proof:
133.89/55.32	 Open
133.89/55.32	EOF