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