唇音

yīn biāo chéng duì chū xiàn shí zuǒ bian wéi bù yuán chún yīn yòu bian wéi yuán chún yīn

音标成对出现时，左边为不圆唇音，右边为圆唇音。

Where symbols appear in pairs, the one to the right represents a rounded vowel.