309期：((01,03,08,09,13,18,21,26,28,31,35,36,41,45,46,49))开：09中中中
310期：((01,08,09,10,13,15,19,23,25,26,30,31,38,41,44,48))开：04错错错
311期：((02,03,10,12,20,21,22,26,29,30,31,32,39,46,48,49))开：21中中中
312期：((06,08,09,10,11,26,27,30,31,32,33,35,40,41,45,48))开：==？