-nnaš/-š/-čč - you (accusative pronominal suffix, 2 fem. sg.) (Bulakh–Kogan 2013b:102)

-nnaš is the “light” form used with verbal forms of the suffix conjugation, -š is the “light” form used with verbal forms of the prefix conjugation, -čč is the “heavy” form. The “heavy” suffixes are used with 2 fem. sg, all the plural and impersonal verbal forms, the “light” suffixes are used in all the other cases (Bulakh–Kogan 2013b:105).