196.51/50.37	MAYBE
196.51/50.37	
196.51/50.37	Problem:
196.51/50.37	 a(a(b(x1))) -> a(b(c(a(x1))))
196.51/50.37	 a(c(x1)) -> b(a(a(x1)))
196.51/50.37	
196.51/50.37	Proof:
196.51/50.37	 Open
196.51/50.37	EOF