| 1 | interfejs | nominative case, singular | nominative case, singular |
| 2 | interfejsa | genitive case, singular | genitive case, singular |
| 3 | interfejsu | dative case, singular | dative case, singular |
| 4 | interfejs | accusative case, singular | accusative case, singular |
| 5 | interfejse | singular, vocative case | singular, vocative case |
| 6 | interfejsom | instrumental case, singular | instrumental case, singular |
| 7 | interfejsu | prepositional case, singular | prepositional case, singular |
| 8 | interfejsi | nominative case, plural | nominative case, plural |
| 9 | interfejsa | genitive case, plural | genitive case, plural |
| 10 | interfejsima | dative case, plural | dative case, plural |
| 11 | interfejse | accusative case, plural | accusative case, plural |
| 12 | interfejsi | plural, vocative case | plural, vocative case |
| 13 | interfejsima | instrumental case, plural | instrumental case, plural |
| 14 | interfejsima | prepositional case, plural | prepositional case, plural |