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