| Singular | Plural | |
|---|---|---|
| Nominativ | phylarches | phylarchae |
| Genitiv | phylarchai, phylarchae | phylarchum, phylarcharum |
| Dativ | phylarchae, phylarchai | phylarchabus, phylarchis |
| Akkusativ | phylarcham, phylarchen | phylarchas |
| Ablativ | phylarche, phylarcha | phylarchabus, phylarchis |
| Vokativ | phylarche, phylarcha | phylarchae |