30.3 The vast majority of adjectives use MASCULINE and NEUTER 2nd DECLENSION endings when modifying nouns of these genders, and 1st DECLENSION endings when modifying FEMININE nouns. This pattern is similar to that used by the pronouns such as αὐτός αὐτή αὐτό and ἐκεῖνος ἐκείνη ἐκεῖνο, though with –ον in the nominative/accusative singular of the neuter.
(cf. S 287)
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