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