248期略算范围15码:16.18.21.24.25.29.32.35.36.42.44.45.47.48.49开21准

249期略算范围15码:05.06.07.10.12.15.18.20.24.25.26.32.34.35.44开29错

251期略算范围15码:12.13.17.15.20.21.25.26.32.35.36.38.40.44.45开00准