SyntPP: PPs have a synthetic stem (i.e., the morphological expression of number and person occurs simultaneously), and the expression of different numbers within the same person does not display internal flexion.

(Onina 2009: 30)

In Synja Khanty, the plural pronominal forms cannot be regarded as the inflectional variants of a single stem, or as the compounds of two separate morphemes (cf. Onina 2009: 30, Nikolaeva 1999: 15–16, Honti 1984: 70–73).