adjectives on (speaking about suffix, not case ending; before vowels, this suffix deceases to single sound and is written as ) are used for deriving adjectives mostly from animal species (in old east slavic, this suffix derived possessive adjectives from plural possessors): 'fox' — 'of a fox', 'likely for a fox'. declension of such adjectives is nominal in nominative and accusative (except masculine and plural animated accusative) and adjectival for other forms.