1.28/0.68	YES
1.28/0.68	
1.28/0.68	Problem:
1.28/0.68	 b(a(a(b(x1)))) -> b(b(b(b(x1))))
1.28/0.68	 b(b(b(a(x1)))) -> b(b(b(b(x1))))
1.28/0.68	 a(b(b(b(x1)))) -> b(a(a(a(x1))))
1.28/0.68	
1.28/0.68	Proof:
1.28/0.68	 KBO Processor:
1.28/0.68	  weight function:
1.28/0.68	   w0 = 1
1.28/0.68	   w(a) = w(b) = 1
1.28/0.68	  precedence:
1.28/0.68	   a > b
1.28/0.68	  problem:
1.28/0.68	   
1.28/0.68	  Qed
1.28/0.68	EOF