1.27/0.64	YES
1.27/0.64	
1.27/0.64	Problem:
1.27/0.64	 a(a(b(a(x1)))) -> a(a(a(a(x1))))
1.27/0.64	 a(a(a(b(x1)))) -> b(a(b(a(x1))))
1.27/0.64	
1.27/0.64	Proof:
1.27/0.64	 String Reversal Processor:
1.27/0.64	  a(b(a(a(x1)))) -> a(a(a(a(x1))))
1.27/0.64	  b(a(a(a(x1)))) -> a(b(a(b(x1))))
1.27/0.64	  KBO Processor:
1.27/0.64	   weight function:
1.27/0.64	    w0 = 1
1.27/0.64	    w(b) = w(a) = 1
1.27/0.64	   precedence:
1.27/0.64	    b > a
1.27/0.64	   problem:
1.27/0.64	    
1.27/0.64	   Qed
1.27/0.64	EOF