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Sû (詞/辭) sī chi̍t khoán koa-si gē-su̍t. Sû sī Tiong-kok kó͘-chá sî-tāi ê chi̍t chióng koa-si, mā kiò chò khiok-á-sû (曲子詞), si-û (詩餘), tn̂g-té-kù (長短句) iah-sī ga̍k-hú (樂府). Sû tī Tn̂g-tiâu khai-sí hoat-tián, kàu Sòng-tiâu hui-siông sî-kiâⁿ.