Ryukyuan languages
The Ryukyuan languages operate based on the mora. Most Ryukyuan languages require words to be at least bimoraic, thus for example in Hateruma the underlying noun root "hand" becomes when it is an independent noun, though it remains as when attached to a clitic, e.g. . However, the syllable may still sometimes be relevant—for instance, the Ōgami topic marker takes a different form after open syllables with short vowels: