四个数字有多少种组合方式不重复

简介：It's okay, just shoot as you like. I don't have many other advantages, but I can carry it. No matter how awesome the firearm is in your hand, you can still carry it. Come on, shoot here. Yin Guang said arrogantly. He just summoned the bronze armor and stood there casually, but he didn't know that he was seeking death.