const pureEtaSingularEndings = {
  nominative: 'η',
  genitive: 'ης',
  dative: 'ῃ',
  accusative: 'ην',
};

const pureAlphaSingularEndings = {
  nominative: 'α',
  genitive: 'ας',
  dative: 'ᾳ',
  accusative: 'αν',
};

const mixedEtaSingularEndings = {
  nominative: 'ης',
  genitive: 'ου',
  dative: 'ῃ',
  accusative: 'ην',
};

const pluralEndings = {
  nominative: 'αι',
  genitive: 'ων',
  dative: 'αις',
  accusative: 'ας',
};

/*
Pattern one (καρδία): If the final α has what I call a “rye” letter (ρ ι ε) letter in front of the α, the α is retained throughout the singular=καρδία. Pattern two (γλῶσσα): If the final α does not have a “rye” letter (ρ ι ε) letter in front of the α, an η is used in the genitive and dative singular (the letters used in these cases in ἀγαθή).

Richards, W. L. (2011). Read Greek in 30 Days [or Less]: New Testament, Old Testament, Apocrypha, Philo, Church Fathers (28). Berrien Springs, MI: Breakthrough Books Company.
*/