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