251期：（（06,10,14,16,20,21,24,25,31,32,33,35,43,44,48,49））开：14中中中
252期：（（01,03,04,05,08,12,14,24,27,29,32,34,35,37,39,46））开：36错错错
253期：（（01,04,07,08,10,13,14,16,19,20,34,40,41,43,46,47））开：47中中中
254期：（（05,10,11,12,17,25,26,29,31,33,36,41,42,43,47,48））开：中？
