Greek Grammar

for example Aias, Aiantos. Therefore, let one declension be called isosyllabic, and the other perittosyllabic.
The isosyllabic declensions are four. The first is in the masculine only, clearly those ending in -as or -es, through the masculine nouns ending in -ōn. Of these, the genitive is in -ou, the dative is in the terminal vowel of the nominative with an iota subscript, and the accusative ends in -n, ending with the vowel of the nominative; this is common to all isosyllabic declensions.
The direct and nominative of the singular is Aineias. The genitive Aineiou. The dative Aineiai. The accusative Aineian. The vocative ō Aineia, and ō Aineias. The nominative and accusative of the dual tō Aineia. The genitive and dative of the dual toin Aineiain. The vocative ō Aineia. | The nominative of the plural hoi Aineiai. The genitive tōn Aineiōn. The dative tois Aineiais. The accusative tous Aineias. The vocative ō Aineiai.
| The Chrysēs proper name, Chrysou. Chrysēi. Chrysen. ō Chrysē, and ō Chrysēs. | Dual: tō Chrysa. toin Chrysain. ō Chrysa. | Plural: hoi Chrysai. tōn Chrysōn. tois Chrysais, tous Chrysas. ō Chrysai. | The prophētēs prophet. prophētou. prophētēi.