The poems are written in various styles such as those written ideographically in Chinese characters, some phonetically with Chinese characters, others both phonetically and ideographically in Chinese characters, and those written without using letters.
歌は、表意的に漢字で表したもの、表音的に漢字で表したもの、表意と表音とを併せたもの、文字を使っていないものなどがあり多種多様である。