ὅ ττι

From LSJ

τὸ κακὸν δοκεῖν ποτ' ἐσθλὸν τῷδ' ἔμμεν' ὅτῳ φρένας θεὸς ἄγει πρὸς ἄταν → evil appears as good to him whose mind the god is leading to destruction (Sophocles, Antigone 622f.)

Source

French (Bailly abrégé)

ou ὅ, ττι;
poét. c. ὅ, τι v. ὅστις.