256期二位6胆:2,3,5,6,8,9255期二位6胆:1,2,4,6,8,9中254期二位6胆:1,3,5,6,7,9中253期二位6胆:0,2,4,5,6,9中252期二位6胆:0,1,3,5,7,9中251期二位6胆:1,2,5,7,8,9错