251期一位7胆:2,3,4,5,6,7,8250期一位7胆:0,1,2,3,5,7,8错249期一位7胆:0,1,2,4,5,6,8中248期一位7胆:0,1,3,4,6,8,9中247期一位7胆:0,1,4,5,7,8,9中