283期：→№←【03,04,05,09,10,13,14,15,17,18,19,20,22,23,26,27,28,30,32,33,40,41,44,46】开：18对
284期：→№←【02,04,06,10,11,13,16,17,18,23,24,25,26,27,28,31,32,41,43,44,46,47,48,49】开：32对
285期：→№←【03,04,06,09,10,13,14,15,21,22,25,28,29,30,33,35,37,38,42,43,44,47,48,49】开：19错
286期：→№←【04,07,10,11,12,16,17,20,21,27,29,32,33,34,35,37,39,40,41,42,43,44,45,49】开：**