Prepositions primarily denote direction or position. They also function as case-like markers for peripheral arguments of the verb.
|su||position at, on, in; location or time of verbal action|
|du||direction to, into, onto; beneficiary of verbal action or recipient of an object|
|pesi||direction from, out of; demoted subject of a transitive verb|
|nene||direction through, via; instrument used in verbal action 'using'; companion of subject in verbal action 'with'|
Prepositions attach to a determiner plus classifier or a pronominal clitic or pronoun. The determiner a is elided after a preposition. Other preposition plus determiner combinations have fused, such as neŋŋo(v) from nene + ŋo(v) or neno(v) from nene + vov.