论尤韵与幽韵的关系及在韵图的排列——参照《慧琳一切经音义》

Studying on relationship of You(尤) and You(幽) and their places in Yuntu

从《慧琳音义》的材料来看,尤韵与幽韵已经相混成一韵,形成重纽韵。但只有在牙喉音中有重纽两类的对立,而唇音中只有原来的幽韵字,为重纽B类,原尤韵唇音字按声母的语音条件已分化为侯韵与虞韵。由于韵图没有按照实际的语音情况将尤韵唇音字列到侯韵和虞韵中去,而是仍列在尤韵三等,为了节约一个图,幽韵唇音字虽为重纽B类,但在韵图中也被列在四等。

You（尤） and You（幽） have been one Yun in Huilin Yinyi.There are Chongniu A and chongniu B in linguals and dentals.But only Chongniu B which is from You（幽） in labials.The labials of You（尤） has changed into Hou（侯）and Yu（虞）.But in Yuntu,they are not placed in Hou（侯） and Yu（虞）.For retrenching a chart,the author of the Yuntu placed the labials of You（幽） in the forth-grade place,although they are still Chongniu B.