URL：https://www.researchgate.net/profile/Minh-Chau-Nguyen-6/publication/280959628/figure/tbl3/AS:650457680707584@1532092604245/Correspondences-between-Proto-Vietic-p-b-Middle-Vietnamese-v-and-Phong-Nha_Q640.jpg
掲載元：https://www.researchgate.net/figure/Proto-Vietic-a-Middle-Vietnamese-spelling-ua-uo-Phong-Nha_tbl4_280959628
