MAYBE
37.34/10.32	MAYBE
37.34/10.32	
37.34/10.32	Problem:
37.34/10.32	 a(x1) -> x1
37.34/10.32	 a(b(x1)) -> c(a(a(c(x1))))
37.34/10.32	 b(x1) -> x1
37.34/10.32	 c(c(x1)) -> b(b(x1))
37.34/10.32	
37.34/10.32	Proof:
37.34/10.32	 Open
37.34/10.32	EOF