724.43/299.39	MAYBE
724.43/299.39	
724.43/299.39	Problem:
724.43/299.39	 strict:
724.43/299.39	  a(c(c(x1))) -> b(b(a(x1)))
724.43/299.39	  b(c(b(x1))) -> a(a(a(x1)))
724.43/299.39	  a(c(a(x1))) -> a(a(a(x1)))
724.43/299.39	 weak:
724.43/299.39	  a(a(b(x1))) -> c(b(a(x1)))
724.43/299.39	  b(a(a(x1))) -> a(a(c(x1)))
724.43/299.39	
724.43/299.39	Proof:
724.43/299.39	 Open
724.43/299.40	EOF