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020期：02,05,06,12,14,16,18,20,22,25,26,27,28,30,32,34,38,39,40,41,45,46,47,48,（共24个）开12对 P|c[EUT  
021期：02,04,05,07,10,14,17,18,20,28,30,33,35,36,38,40,41,42,43,44,45,46,47,49,（共24个）开42对 bn$a7\X-  
022期：02,04,06,10,14,17,18,24,25,26,27,28,30,32,35,36,37,39,40,41,43,45,46,47,（共24个）开18对 )*6]m1  
023期：01,02,05,06,10,12,13,14,19,20,21,22,23,26,27,28,30,32,34,41,42,43,44,45,（共24个）