add cif_v1 and cif_export

zhuangzhong

2024-06-07 e700341244b02eb4116ba96d1b7faf42375dbe57

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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.