| Vortspeco | substantivo |
|---|---|
| Genro | neŭtra |
| Singularo | Pluralo | |
|---|---|---|
| Nominativo | Quartett | Quartette |
| Genitivo | Quartetts, Quartettes | Quartette |
| Dativo | Quartett, Quartette | Quartetten |
| Akuzativo | Quartett | Quartette |
| angla | quartet |
|---|---|
| dana | kvartet |
| esperanto | kvarteto |
| nederlanda | kwartet |
| hispana | cuarteto |