252期：（寻码）《01,02,04,05,06,09,11,14,16,18,21,22,27,30,31,36,37,38,39,40,42,44,47,49》开：22对
253期：（寻码）《01,02,04,06,07,11,13,15,17,21,24,25,26,29,30,31,34,36,41,42,43,46,47,49》开：16错
254期：（寻码）《03,04,05,07,08,11,12,14,18,20,23,26,27,31,34,35,38,40,42,43,44,45,46,48》开：02错
255期：（寻码）《08,09,10,12,13,14,16,17,18,19,20,24,25,30,32,33,38,39,40,41,42,43,47,49》开：？？