272期：((02,14,15,17,21,28,31,32,34,35,37,38,39,40,46,48))开：34中中中
273期：((02,08,09,10,14,16,20,26,27,33,34,35,43,44,47,49))开：42错错错
274期：((01,02,03,04,05,12,16,17,21,23,34,37,40,43,44,49))开：08错错错
275期：((07,08,09,10,16,19,20,23,24,25,26,31,38,39,43,45))开：24中中中
276期：((08,11,14,16,22,27,28,30,33,34,38,41,42,45,47,48))开：==？