266期：【01,06,09,15,21,25,30,36,39,40,42,45】开（08）√√
267期：【01,10,11,14,18,19,23,24,28,29,37,49】开（40）√√
268期：【03,07,09,12,17,23,24,25,30,38,46,47】开（40）√√
269期：【04,10,23,24,25,27,37,41,43,44,46,47】开（22）√√
270期：【06,07,09,10,12,19,30,36,39,40,42,44】开（19）××
271期：【01,03,11,12,20,28,30,40,45,47,48,49】开（？）