| Singular | Plural | |
|---|---|---|
| Nominativ | crustula | crustulae, crustule |
| Genitiv | crustulae, crustulai, crustule | crustularum |
| Dativ | crustulae, crustulai, crustule | crustulabus, crustulis |
| Akkusativ | crustulam | crustulas |
| Ablativ | crustula, crustulad | crustulabus, crustulis |
| Vokativ | crustula | crustulae, crustule |
12 (21) Formen für „crustula“