251期：24码《01,09,10,11,12,13,18,20,24,25,26,27,29,30,31,33,35,38,39,41,43,44,48,49》开：30对
252期：24码《05,06,07,08,10,12,13,14,15,18,21,22,28,29,30,32,34,36,38,39,42,43,45,49》开：22对
253期：24码《01,02,05,06,09,10,13,14,15,18,19,20,21,24,27,28,31,34,36,40,43,45,46,47》开：16错
254期：24码《01,02,04,05,09,11,12,13,15,16,18,19,20,24,25,26,34,35,38,40,44,47,48,49》开：02对
255期：24码《09,12,13,14,15,16,17,20,21,25,27,28,30,33,34,35,36,38,39,40,41,45,46,49》开：？？