[*] 217. RULES.—a. If the nominative singular ends in alpha preceded by a vowel (σκιά_ shadow) or ρ (μοῖρα), alpha is kept throughout the singular. b. If the nominative singular ends in alpha preceded by a consonant not ρ, alpha is changed to η in the genitive and dative singular. c. If the nominative singular ends in η, η is kept in all the cases of the singular. d. When the genitive singular has -ης, final α of the nominative singular is always short; when the genitive singular has -α_ς, the final α is generally long. Feminines fall into two classes:
[*] 217. RULES.—a. If the nominative singular ends in alpha preceded by a vowel (σκιά_ shadow) or ρ (μοῖρα), alpha is kept throughout the singular. b. If the nominative singular ends in alpha preceded by a consonant not ρ, alpha is changed to η in the genitive and dative singular. c. If the nominative singular ends in η, η is kept in all the cases of the singular. d. When the genitive singular has -ης, final α of the nominative singular is always short; when the genitive singular has -α_ς, the final α is generally long. Feminines fall into two classes: