階段で転んで膝擦りむいちゃった

N5 階段 kaidan stairs N3 膝 hiza knee, lap

N2 階 kai / kizahashi storey, stair, counter for storeys of a building N3 段 dan, tan grade, steps, stairs N4 転 ten / koro.garu, koro.geru, koro.gasu, koro.bu, maro.bu, utata, utsu.ru, kuru.meku revolve, turn around, change N1 膝 shitsu / hiza knee, lap, rodilla N1 擦 satsu / su.ru, su.reru, -zu.re, kosu.ru, kosu.reru grate, rub, scratch

N4 〜ので node Indicates cause or reason in a softer way than kara, connects two clauses, often used in polite explanations N5 〜で de Indicates where an action happens, means used, tool, cause, or material depending on context