ὅς
ὅς, ἥ, ὅ, gen. οὗ, ἧς, οὗ, etc. ; dat. pl. οἷς, αἷς, οἷς, etc.: Ep. forms, gen. ὅου (prob. replacing *ὅο) in the phrases ὅου κλέος οὔ ποτʼ ὀλεῖται Il. 2.325, h.Ap. 156 ; ὅου κράτος ἐστὶ μέγιστον Od. 1.70 (elsewh. οὗ Il. 7.325, al., never οἷο); fem. ἕης Il. 16.208 (perh. imitation of ὅου; elsewh. only ἧς 5.265, al.); dat. pl. οἷς, οἷσι, ᾗς, ᾗσι (never αἷς or αἷσι in Hom.) :—
ὅς γε, ὅσπερ, ὅστε, ὅστις, as well as to ὅς, and to ὁ, ἡ, τό as relat.) :