724.78/299.38	MAYBE
724.78/299.38	
724.78/299.38	Problem:
724.78/299.38	 strict:
724.78/299.38	  a(a(b(x1))) -> c(b(a(x1)))
724.78/299.38	  a(b(c(x1))) -> c(c(b(x1)))
724.78/299.38	  b(a(c(x1))) -> a(a(a(x1)))
724.78/299.38	 weak:
724.78/299.38	  b(a(b(x1))) -> c(a(b(x1)))
724.78/299.38	  b(b(c(x1))) -> c(c(a(x1)))
724.78/299.38	  a(c(a(x1))) -> a(b(b(x1)))
724.78/299.38	
724.78/299.38	Proof:
724.78/299.38	 Open
724.78/299.38	EOF