四个数字有多少种组合有两个重复

简介：After instructing the mercenaries not to disturb him, Qin Fen found a place with strong spiritual energy and began to take the elixir. The first animal blood elixir was quickly swallowed by him. In an instant, there was a terrifying aura. Blood energy burst out from the Beast Blood Pill, and the violent energy swept out like a tsunami, as if to destroy everything.