声母R组合
ru re rao reng ruo rang rui ruan run rong ri rou ran ren rao ru ren rui ri rang ruan ran rou re run ruo rong reng ran ren ru rong rui ruo run rao rang reng ri rou re ruan rao rang ri ren ran ruan reng rou ruo run re rong ru rui rang ran ruo rong re ren rou reng rui run ri ruan ru rao
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