1.29/0.67	YES
1.29/0.67	
1.29/0.67	Problem:
1.29/0.67	 a(a(a(b(x1)))) -> a(b(b(a(x1))))
1.29/0.67	 b(b(b(b(x1)))) -> b(a(b(b(x1))))
1.29/0.67	 a(b(b(a(x1)))) -> b(a(a(a(x1))))
1.29/0.67	 b(a(b(b(x1)))) -> b(b(a(b(x1))))
1.29/0.67	
1.29/0.67	Proof:
1.29/0.67	 String Reversal Processor:
1.29/0.67	  b(a(a(a(x1)))) -> a(b(b(a(x1))))
1.29/0.67	  b(b(b(b(x1)))) -> b(b(a(b(x1))))
1.29/0.67	  a(b(b(a(x1)))) -> a(a(a(b(x1))))
1.29/0.67	  b(b(a(b(x1)))) -> b(a(b(b(x1))))
1.29/0.67	  KBO Processor:
1.29/0.67	   weight function:
1.29/0.67	    w0 = 1
1.29/0.67	    w(a) = w(b) = 1
1.29/0.67	   precedence:
1.29/0.67	    b > a
1.29/0.67	   problem:
1.29/0.67	    
1.29/0.67	   Qed
1.45/0.68	EOF