MAYBE
228.13/58.07	MAYBE
228.13/58.07	
228.13/58.07	Problem:
228.13/58.07	 b(b(a(a(b(x1))))) -> b(a(a(b(b(x1)))))
228.13/58.07	 b(a(a(a(b(b(x1)))))) -> b(b(a(a(a(b(x1))))))
228.13/58.07	 b(a(b(a(a(b(x1)))))) -> b(a(b(b(a(a(a(b(x1))))))))
228.13/58.07	 b(a(a(a(b(a(b(x1))))))) -> b(a(a(b(a(b(x1))))))
228.13/58.07	
228.13/58.07	Proof:
228.13/58.07	 Open
228.13/58.07	EOF