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Adhere, Attach, Refer To, Append
5 strokes
ふ
つ.ける、-つ.ける、-づ.ける、つ.け、つ.け-、-つ.け、-づ.け、-づけ、つ.く、-づ.く、つ.き、-つ.き、-つき、-づ.き、-づき