270期：<<01,02,03,07,09,14,15,19,23,27,28,32,34,40,45,47>>开：32中中中
271期：<<10,11,20,24,25,26,27,31,36,37,38,41,43,46,48,49>>开：22错错错
272期：<<06,09,10,13,15,24,25,27,30,34,35,36,40,43,47,48>>开：34中中中
273期：<<03,08,12,13,15,17,20,22,30,34,35,38,39,40,41,47>>开：中？