050期：〓(02,03,04,06,08,10,15,18,19,21,25,27,28,29,30,32,33,35,36,38,40,43,47,49)〓→开:40准
051期：〓(01,02,03,04,07,08,09,13,19,20,21,29,31,32,34,35,37,38,39,40,45,46,47,49)〓→开:28错
052期：〓(02,03,07,08,11,12,14,16,18,19,20,21,22,24,25,26,27,28,32,37,38,44,46,47)〓→开:22准
053期：〓(01,02,05,06,07,09,12,14,15,16,19,20,23,24,26,30,31,37,38,39,43,45,46,49)〓→开:??←