255期：【03,11,12,18,22,24,29,30,31,41,42,47】开（44）√√
256期：【03,04,09,15,16,25,27,30,34,37,47,49】开（01）√√
257期：【02,05,07,10,14,17,19,27,29,32,42,43】开（07）××
258期：【02,03,04,05,08,09,11,12,15,16,34,37】开（46）√√
259期：【06,09,17,28,30,32,33,35,38,41,42,44】开（22）√√
260期：【08,21,30,31,32,37,40,41,42,44,48,49】开（？）