MAYBE
38.19/10.34	MAYBE
38.19/10.34	
38.19/10.34	Problem:
38.19/10.34	 a(x1) -> x1
38.19/10.34	 a(b(x1)) -> b(a(c(x1)))
38.19/10.34	 b(x1) -> x1
38.19/10.34	 c(c(x1)) -> b(a(x1))
38.19/10.34	
38.19/10.34	Proof:
38.19/10.34	 Open
38.19/10.34	EOF