194期半数大围【01,05,06,08,10,11,13,18,19,20,21,23,24,29,42,45,46,48,49,（共19个）】

↓开04
193期半数大围【01,03,04,08,09,23,25,26,28,29,31,36,37,39,40,48,49,（共17个）
】

↓开31乂
192期半数大围【01,03,10,11,12,13,14,16,20,21,22,25,26,27,28,33,34,（共17个）
】

↓开39乂
191期半数大围【02,03,04,06,07,10,12,14,15,18,19,30,31,32,34,35,36,38,40,41,42,46,47,48,（共24个）】

↓开41乂
190期半数大围【01,02,06,07,08,10,11,12,13,14,18,19,20,22,23,24,26,27,30,32,33,34,35,39,（共24个）】

↓开43
189期半数大围【11,12,13,19,21,22,23,24,25,31,32,33,34,35,37,38,43,44,45,46,47,49,（共22个）】

↓开46乂
188期半数大围【01,05,06,08,20,21,23,24,27,29,32,33,34,35,36,42,43,45,49,（共19个）】

↓开39乂
187期半数大围【01,02,05,09,11,12,13,15,17,18,22,23,24,25,41,43,45,46,47,49,（共20个）】

↓开29中2
186期半数大围【12,13,15,19,20,22,23,24,25,28,29,31,32,34,35,40,41,42,44,46,47,48,（共22个）】

↓开42中1
185期半数大围【06,09,10,11,14,20,21,22,25,26,32,33,36,37,38,42,44,47,48,49,（共20个）】

↓开42乂
184期半数大围【01,04,06,07,08,11,15,16,18,21,25,27,28,31,34,35,37,44,45,46,47,（共21个）
】

↓开25中1
183期半数大围【01,02,03,04,09,22,23,24,25,28,29,30,34,35,37,38,41,45,46,（共19个）】

↓开27乂
182期半数大围【05,07,11,13,16,17,21,23,28,29,32,33,35,39,40,44,45,（共17个）】

↓开27中1
181期半数大围【12,13,14,16,17,18,19,20,24,26,27,28,29,30,32,36,38,39,40,42,43,44,48,49,（共24个）】

↓开02乂
180期半数大围【01,05,06,08,10,11,13,18,19,20,22,23,24,29,42,45,46,48,49,（共19个）】

↓开01
179期半数大围【01,03,04,08,09,23,25,26,28,29,31,36,37,39,40,48,49,（共17个）】

↓开20
178期半数大围【01,03,05,08,09,11,13,14,17,20,21,25,27,28,29,33,35,41,44,47,49,（共21个）】

↓开