194.58/49.71	MAYBE
194.58/49.71	
194.58/49.71	Problem:
194.58/49.71	 a(x1) -> x1
194.58/49.71	 a(b(x1)) -> b(c(b(a(x1))))
194.58/49.71	 b(x1) -> a(x1)
194.58/49.71	 c(c(x1)) -> x1
194.58/49.71	
194.58/49.71	Proof:
194.58/49.71	 Open
194.58/49.71	EOF