249期：→24码《01,03,04,05,07,08,10,15,16,17,19,22,24,28,31,32,34,35,37,38,45,46,47,49>开：32对
250期：→24码《01,03,04,05,10,14,15,16,17,19,22,27,28,29,30,31,34,37,38,39,40,45,47,48>开：24错
251期：→24码《05,06,07,09,11,14,15,16,19,20,21,23,24,25,30,31,35,37,38,44,45,46,48,49>开：14对
252期：→24码《01,02,04,05,07,08,09,15,17,18,20,21,22,24,27,29,30,32,34,37,38,41,43,49>开：36错
253期：→24码《01,02,03,05,06,07,08,18,19,24,25,29,30,32,34,36,37,38,39,40,41,44,45,48>开：//
