Dey and dem occur as 3PL pronouns in subject position, but dem and em vary in object position. Dem also functions as nominal plural. In this case, it can either be preposed (Example 48) or postposed (Example 51) to the noun.
Source: Escure 1983a: 36
Source: Escure 1983a: 33
Source: Escure's 1992 materials