211.23/50.60	MAYBE
211.23/50.60	
211.23/50.60	Problem:
211.23/50.60	 a(b(a(a(b(a(b(a(a(b(x1)))))))))) -> a(a(b(a(b(a(a(b(a(a(b(a(b(x1)))))))))))))
211.23/50.60	
211.23/50.60	Proof:
211.23/50.60	 Open
211.23/50.60	EOF