“υἱός”, ‘son,’ is declined from three stems:
case | “υἱο-” | “υἱυ-” | “υἱ-” |
Singular: Nom. | “υἱός” | -- | -- |
Gen. | “υἱοῦ” | “υἱέος” | “υἷος” |
Dat. | -- | “υἱέι” (and “υἱεῖ”?) | “υἷι” |
Acc. | “υἱόν” | “υἱέα” | “υἷα” |
Voc. | “υἱέ” | -- | -- |
Dual: N. A. | -- | -- | “υἷε” |
G. D. | -- | -- | -- |
Plural: N. | -- | “υἱέες, υἱεῖς” | “υἷες” |
G. | “υἱῶν” | -- | -- |
D. | “υἱοῖσι”(“ν”) | -- | “υἱάσι”(“ν”) |
A. | -- | “υἱέας” | “υἷας” |
V. | -- | “υἱεῖς” | -- |