246期：{{05,08,09,17,19,20,24,28,30,33,39,40,42,43,46,49}}开：30准
247期：{{01,10,13,16,17,18,19,21,22,26,28,29,35,40,42,49}}开：40准
248期：{{05,06,07,11,18,21,23,24,30,32,34,36,37,40,46,48}}开：20错
249期：{{02,08,10,13,17,27,28,33,35,37,40,41,42,45,46,48}}开：23错
250期：{{05,06,07,08,10,11,13,14,20,25,32,33,38,43,44,49}}开：14准
251期：{{01,07,13,14,15,16,18,26,33,34,40,41,42,44,47,49}}开：00