MAYBE
32.32/10.18	MAYBE
32.32/10.18	
32.32/10.18	Problem:
32.32/10.18	 a(x1) -> b(x1)
32.32/10.18	 a(b(x1)) -> b(b(a(c(c(a(x1))))))
32.32/10.18	 c(b(x1)) -> x1
32.32/10.18	
32.32/10.18	Proof:
32.32/10.18	 Open
32.32/10.19	EOF