| Sg | Pl | |
| Nom | spaktanīke | spaktanīki (rule) |
| Voc | ? (rule) | ? (rule) |
| Obl | spaktanīke (rule) | spaktanīkeṃ (rule) |
| Gen | spaktanīkentse (rule) | spaktanīkeṃts (rule) |
| Loc | spaktanīkene (rule) | ? (rule) |
| Abl | spaktanīkemeṃ (rule) | ? (rule) |
| Perl | spaktanīkesa (rule) | ? (rule) |
| Com | spaktanīkempa (rule) | ? (rule) |
| All | spaktanīkeśc (rule) | ? (rule) |
| Caus | spaktanīkeñ (rule) | ? (rule) |