319期：〓(08,12,15,18,19,21,24,25,26,27,28,31,33,34,35,36,37,38,40,44,45,46,47,49)〓→开:45准
320期：〓(01,02,04,08,10,14,15,16,17,20,21,22,23,27,29,31,32,33,35,36,38,47,48,49)〓→开:28错
321期：〓(01,03,04,05,09,11,12,15,19,21,22,24,28,29,32,33,36,39,41,42,43,44,45,46)〓→开:??←