| SG | PL | |
| NOM | _ŠUMUš (rule) | _ŠUMUeš (rule) |
| ACC | _ŠUMUn (rule) | ? (rule) |
| GEN | _ŠUMUaš (rule) | _ŠUMUš (rule) |
| DAT | _ŠUMUi (rule) | _ŠUMUaš (rule) |
| LOC | _ŠUMUi (rule) | _ŠUMUaš (rule) |
| ALL | _ŠUMUa (rule) | ? (rule) |
| ERG | _ŠUMUanza (rule) | _ŠUMUanteš (rule) |
| ABL | _ŠUMUz (rule) | |
| INS | _ŠUMUt (rule) |