〖0次〗: 10,11,15,19,26,27,28,30,31,35,41,45,(12个)〖1次〗: 01,03,05,09,12,14,17,20,21,24,29,34,39,42,46,48,49,(17个)〖2次〗: 04,07,08,13,22,23,25,32,33,36,37,38,40,43,44,47,(16个)xxx〖3次〗: 16,18,(2个)xxx〖4次〗: 02,06,(2个)xxx