723.51/299.38	MAYBE
723.51/299.38	
723.51/299.38	Problem:
723.51/299.38	 strict:
723.51/299.38	  b(b(b(x1))) -> a(c(c(x1)))
723.51/299.38	  b(c(a(x1))) -> c(a(c(x1)))
723.51/299.38	  a(c(a(x1))) -> b(a(b(x1)))
723.51/299.38	 weak:
723.51/299.38	  a(b(c(x1))) -> a(b(b(x1)))
723.51/299.38	  b(a(c(x1))) -> c(b(b(x1)))
723.51/299.38	
723.51/299.38	Proof:
723.51/299.38	 Open
723.51/299.39	EOF