Relative clauses specify the noun by describing it. They begin with the relativiser xikuX$ and are placed before the modified noun, The auxiliary is not optional, and is given a rising tone. Only subjects can be relativised. Other cases must be promoted to subject.
Any noun can be modified by relative clauses, including pronouns and proper nouns.
If the only argument of the relative verb is the modified noun, the auxiliary is appended to the verb, and the relativiser is dropped. This auxiliary is given a mid-tone.
Similar are intransitives utilising the case markers and other adpositions.
If the only arguments of the relative verb are the modified noun and a direct object, the verb is appended to the object, with or without the auxiliary, and the relativiser is dropped.