First slightly smuggle the police the past, the police returns, the police led a daughter to pass, the police thief came back, mother led another daughter to pass, mother came back, mother the daddy passed together, the daddy came back, the police thief passed, mother came back, mother the daddy passed together, the daddy came back, leads a son to pass, the police thief came back, the police led another son to pass, the police came back, the final police thief passed together. OK! Goes through a strategic pass!