You use mi ken <Verb> ala <Verb> ? for a yes or no question Ex: mi ken kepeken ala kepeken lipu? (Can i use the document) Literal translation: me can use/not use document? because ala means no. li marks the start of a predicate, e connects the transitive verb to the direct object, seme is what or any question words. You don't use li when the subject is not mi or sina. Words list: https://raw.githubusercontent.com/baisong/tokitoki-js/gh-pages/nimi_ale.png