| Singular | Plural | |
|---|---|---|
| Nominativ | crustularius | crustularii |
| Genitiv | crustulari, crustularii | crustularium, crustulariorum |
| Dativ | crustulario | crustulariis |
| Akkusativ | crustularium, crustulariom | crustularios |
| Ablativ | crustulario | crustulariis |
| Vokativ | crustularie | crustularii |
12 (15) Formen für „crustularius“