-om - their; them (genitive and accusative pronominal suffix, 3 masc. pl.)
(Bulakh–Kogan 2013b:101)
-ˀom with verbal forms ending in *-ā (the glottal stop is of secondary nature, see Bulakh–Kogan 2013b:105).
Used as a polite form (Bulakh–Kogan 2013b:106).
Tigrinya
-än - their; them (genitive and accusative pronominal suffix, 3 fem. pl.)
(Bulakh–Kogan 2013b:101)
-ˀän with verbal forms ending in *-ā (the glottal stop is of secondary nature, see Bulakh–Kogan 2013b:105).
Used as a polite form (Bulakh–Kogan 2013b:106).
This preposition has the locative meaning, while the instrumental one is expressed through bə. Tgr. forms ˀəb/bə- are phonetic variants with no semantic difference.