| Nominativ | perlonga, perlongum, perlongus, perlongus, perlongum, perlonga | perlongi, perlongae, perlonga, perlongae, perlongi, perlonga |
| Genitiv | perlongi, perlongae, perlongi, perlongae, perlongi, perlongi | perlongorum, perlongorum, perlongarum, perlongorum, perlongorum, perlongarum |
| Dativ | perlongo, perlongo, perlongae, perlongae, perlongo, perlongo | perlongis, perlongis |
| Akkusativ | perlongam, perlongum, perlongum, perlongum, perlongam, perlongum | perlonga, perlongos, perlongas, perlonga, perlongos, perlongas |
| Ablativ | perlongo, perlongo, perlongo, perlongo, perlonga, perlonga | perlongis, perlongis |
| Vokativ | perlonge, perlonga, perlongum, perlonge, perlongum, perlonga | perlongi, perlongae, perlonga, perlongae, perlongi, perlonga |
