| mask. | fem. | neutr. | |
|---|---|---|---|
| Nom. Sg. | terren‑us | terren‑a | terren‑um | 
| Gen. Sg. | terren‑i | terren‑ae | terren‑i | 
| Dat. Sg. | terren‑o | terren‑ae | terren‑o | 
| Akk. Sg. | terren‑um | terren‑am | terren‑um | 
| Abl. Sg. | terren‑o | terren‑a | terren‑o | 
| Nom. Pl. | terren‑i | terren‑ae | terren‑a | 
| Gen. Pl. | terren‑orum | terren‑arum | terren‑orum | 
| Dat. Pl. | terren‑is | terren‑is | terren‑is | 
| Akk. Pl. | terren‑os | terren‑as | terren‑a | 
| Abl. Pl. | terren‑is | terren‑is | terren‑is |