The radical kozato shows a hill. 阝 and is always on the left side of a kanji. (Please note that rather similar radical oozato ⻏ is always on the right sight of the kanji and means village.)
The plants 艹 are made by the sun 日 to be large 大 (= as long shadows) at sunset. - Please be aware that this very similar radical stands for the sunrise.
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