〖0次〗:01,03,04,06,07,08,11,13,14,16,18,20,22,28,30,31,33,35,36,46,49,（共21个）〖1次〗:02,05,09,10,15,17,19,21,23,24,25,27,29,37,38,44,45,48,（共18个）xx〖2次〗:12,32,34,40,41,43,47,（共7个）xxx〖3次〗:26,39,42（共3个）xxx