add func CutSplit

雾聪

2024-01-23 f23b6c98381dd91661fc1df753d84a58c725d71a

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p m    p.m.
pm    p.m.
p.m.
p.m    p.m.
am    a.m.
a.m.
a.m    a.m.
a m    a.m.