/ɹ̩/ only is heard after dental/alveolar fricatives and affricates only, /i/ is never heard in this position.
/ə/ and /ɯ/ are typically free variants of each other. When used as a single vowel, it is commonly heard as [ɯ], but when followed by a back vowel /ɯ,u/ it is pronounced as [ə].[8]
^Zhang Jimin 张済民. 1993. Gelao yu yan jiu 仡佬语研究 (A study of Gelao). Guiyang, China: Guizhou People's Press 贵州民族出版社.
^Zhou Guoyan 周国炎. 2004. Gelao zu mu yu sheng tai yan jiu 仡佬族母語生态硏究 (Studies on the linguistic ecology of the Gelao people). Beijing: Ethnic Publishing House 民族出版社.
^Li Jinfang [李锦芳]. 2006. Studies on endangered languages in the Southwest China [西南地区濒危语言调查研究]. Beijing: Minzu University [中央民族大学出版社].
^Samarina, Irina Vladimirovna [Самарина, Ирина Владимировна]. 2011. The Gelao language: materials for a Kadai comparative dictionary [Языки гэлао: материалы к сопоставительному словарю кадайских языко]. Moscow: Academia. ISBN9785874443917
^Zhuo, Guoyan (2000). The phonology system of Judu Gelao language. The Fifth International Symposium on Languages and Linguistics: Hochiminh City: Vietnam National University, Ho Chi Minh City University.