018期：（（03,05,07,10,14,16,18,19,20,21,26,29,32,38,39,41））开：10中中中
019期：（（07,11,13,14,15,19,23,29,30,33,35,39,40,41,42,44））开：04错错错
020期：（（01,06,07,11,15,17,18,19,22,25,31,32,39,45,47,49））开：33错错错
021期：（（03,07,15,19,21,29,30,35,37,38,39,42,43,44,48,49））开：中？