This radical is considered to be a simplification of: fortune telling 占 (crack 卜 in the shell 口 of a turtle from which the fortune was told.). Sometimes it is read as a forking of a road.
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Vocabulary
卡片
kǎ piàn
card
3447
卡特
Kǎ tè
Carter (name); James Earl (Jimmy) Carter (1924-), US Democrat politician, president 1977-1981
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