355.49/50.59	MAYBE
355.49/50.59	
355.49/50.59	Problem:
355.49/50.59	 b(a(b(b(x1)))) -> a(a(b(a(x1))))
355.49/50.59	 a(a(a(a(x1)))) -> b(a(b(b(x1))))
355.49/50.59	 b(b(b(a(x1)))) -> b(b(a(a(x1))))
355.49/50.59	
355.49/50.59	Proof:
355.49/50.59	 Open
355.49/50.59	EOF