The regular pattern of the independent pronominal possessor is ri 'of' + personal pronoun, as for instance ri m 'of me' = 'mine'. The 3rd person singular independent possessive has a special form: ri rê (or ri r'ê = ri ri ê [of of him]), to avoid confusion with the dependent pronominal possessor r'ê 'of him'.
Source: Maurer 1995: 45
Source: Maurer 1995: 64