725.67/299.39	MAYBE
725.67/299.39	
725.67/299.39	Problem:
725.67/299.39	 strict:
725.67/299.39	  a(c(b(x1))) -> b(b(a(x1)))
725.67/299.39	  a(c(b(x1))) -> a(c(c(x1)))
725.67/299.39	  b(b(b(x1))) -> a(a(c(x1)))
725.67/299.39	  c(a(c(x1))) -> b(b(b(x1)))
725.67/299.39	 weak:
725.67/299.39	  b(a(b(x1))) -> b(a(b(x1)))
725.67/299.39	  b(a(a(x1))) -> b(a(b(x1)))
725.67/299.39	
725.67/299.39	Proof:
725.67/299.39	 Open
725.67/299.40	EOF