o
Uses of o
1) replaces sina and li, goes directly before the verb and turns it into an imperative
e.x. : o tawa 'Go!'
2) Follows a name or noun to mark it as vocative and directly address said name.
e.x.: jan Mona o sina pilin seme? 'Mona, how are you?" A comma often follows the o in this instance.
3) Replaces li and follows subject, or comes after mi and sina before the verb to express wishes, recommendations, desires, requests, etc.
e.x. mi o tawa 'Let's go!"
e.x.2: sina o pona sijelo "May you become well'