| Language: | Trumai |
| Feature: | Number of Cases by Oliver A. Iggesen |
| Value: | 5 cases |
| Absolutive: | axos |
| Ergative: | axos-ak |
| Dative: | axos-atl, axos-ki |
| Genitive: | axos-kate |
| Locative: | (esak-en) |