196.73/49.65	MAYBE
196.73/49.65	
196.73/49.65	Problem:
196.73/49.65	 a(x1) -> b(b(c(x1)))
196.73/49.65	 c(a(b(x1))) -> a(a(c(x1)))
196.73/49.65	 c(b(x1)) -> x1
196.73/49.65	
196.73/49.65	Proof:
196.73/49.65	 Open
196.73/49.65	EOF