大般涅槃經義記 4.85

4.85

就複呼中有其十章，相狀如何？就彼三十四字體中，前之五五二十五字是其毘聲，備如下辨；蛇羅等九是其超聲，亦如下說。

In compound vocalisation there are ten charts. What is their form? Among those thirty-four letter bodies, the first five-times-five, twenty-five letters are the *sparśa* sounds, fully explained as below; the nine from *she*, *luo*, and so on are the semi-vowel and sibilant sounds, also as explained below.