Nominative singular
Filius
Genitive singular
Filii
Dative singular
Filio
Accusative singular
Filium
Ablative singular
Filio
Vocative singular
Fili
Nominative plural
Filii
Genitive plural
Filiorum
Dative plural
Filiis
Accusative plural
Filios
Ablative plural
Filiis