-ksi-

Etymology
Originally from the plural stem of (in some cases also, ; all deverbal noun suffixes), by analogy with plural derivatives of deverbal nouns using that suffix.

Usage notes
Attaches to the weak stem of the verb. The nominal form obtained as a result of attaching the locative case ending is considered to be in plural.

Only cases where the corresponding, or  derivative of a verb does not exist as an independent noun can be considered to use the , which has developed from the inflected forms of those derivatives by analogy, specifically.