〖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