Clinical Trials Study
Copyright ©The Author(s) 2021.
World J Clin Cases. Dec 26, 2021; 9(36): 11276-11284
Published online Dec 26, 2021. doi: 10.12998/wjcc.v9.i36.11276
Table 1 Chinese phonetic alphabet of the tested vowels and fricative consonants

Chinese phonetic alphabet (Pinyin)
Vowels
/a//sha//fa//da//ba//ya/
/o//mo//po//bo//wo//huo/
/e//he//ge//se//ze//ke/
/i//bi//ji//di//li//pi/
/u//tu//shu//hu//zhu//pu/
/ü//yü//jü//qü//yü//lü/
Fricative consonants
/f//feng//fu//fen//fang//fa/
/h//huan//hu//hui//huang//huo/
/s//si//suo//song//san//sen/
/sh//shan//shuo//shan//shui//shi/
/x//xing//xiang//xu//xin//xue/
/z//zi//ze//zuan//zuo//zui/
/c//cui//cuo//ci//can//cai/
/r//rong//ren//rou//ruan//ri/