-a [sg.]
Nominative (the (a) large gate), Vocative (O large gate)
-æ [sg.]
Genitive (of the large gate), Dative (to/for the large gate)
-am [sg.]
Accusative (the large gate)
-æ [pl.]
Nominative (the large gates or large gates), Vocative (O large gates)
-ā [sg.]
Ablative (by/with/from the large gate)
-ārum [pl.]
Genitive (of the large gates)
-īs [pl.]
Dative (to/for the large gates), Ablative (by/with/from the large gates)
-ās [pl.]
Accusative (the large gates)