The radical niku is typically at the left side of a composition and drawn as: 月, which looks equal to: "moon, month 月" but still has the meaning 'body part'.
Is understood as a flat version of: 人 - Other radicals with 'person' are: sitting 匕, sitting cross-legged 夂, kneeling ⺈, skilled 才, bending マ,卩, slumped 㔾 or husband 夫
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on the tatami mat 日 and then cross-legged 夂, has "reversed")
