Home/Pinyin chart/kuokuo in Mandarin kuō kuó kuǒ kuò The syllable kuo is spelled with k plus the final uo. 401 characters use it across the tones below, ordered from most to least common. kuòfourth tone · falling · 8 characters Listen适shì括kuò扩kuò阔kuò廓kuò蛞kuò擴kuò闊kuò ← kun Full chart la → 159 of 401 syllables