Left: ask for 求 ([I'm dying of thirst] Just one 一 drop 丶 of water 水, this is my: request!), right: to beat 攵 (= a hand that holds a stick ノ)
Mnemonic
In the water 水 someone is floating with his head 丶 still above the surface 一, and next to him is someone with a stick ノ in his hand , trying to rescue him.
The radical nobun shows a hand or 又 that holds a stick ノ (simplified from the Chinese radical 66 攴 for whip or rap. In this radical, the stick 卜 in the hand 又 is easily cognizable.)
Tip: Go to the radicals that are contained in this character and learn all the characters with this radical systematically!
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