The feminine plural is added to ergative singular pronouns to pluralise:

Ais (I) becomes aisot (exclusive we) Ana (you) becomes anot (you plural) Sà (she, he, it) becomes saiot (they).

This is not true in other circumstances, such as the absolutive, used for direct object pronouns:

Mé (me) but fair (us) Ané (you) but anaith (you plural) Sé (him, her, it) but seith (them)