300期：〓(01,02,08,09,11,12,13,14,16,17,21,22,24,25,33,34,37,38,41,42,43,44,47,48)〓→开:16准
301期：〓(01,08,09,10,11,13,17,19,21,25,26,29,32,34,36,38,39,40,41,42,43,45,46,47)〓→开:18错
302期：〓(01,06,07,08,11,14,20,21,22,25,26,27,30,32,33,34,39,40,41,42,45,47,48,49)〓→开:06准
303期：〓(02,07,11,12,13,14,20,21,22,23,24,26,28,30,34,36,37,38,42,43,45,46,48,49)〓→开:33错
304期：〓(02,03,05,08,09,10,14,15,17,18,21,22,25,26,27,29,31,32,33,35,36,46,47,49)〓→开:??←