ὅσπερ, ἥπερ, ὅπερ
(Epic dialect ὅπερ as masculine, [[ 8th c.BC: Ilias Homerus Epicus “Illiad” 7.114, 21.107)] Refs 8th c.BC+]; genitive οὗπερ, Epic dialect οἷόπερ [[ 3rd c.BC: Apollonius Rhodius Epicus 1.1325 ] Refs 3rd c.BC+]; in Ionic dialect writers and in Poets the oblative cases are sometimes borrowed from the Article, τόπερ [[ [prev. author] 3.1098; τοῦπερ 4th-5th c.BC: Aeschylus Tragicus “Persae” 779; τῇπερ 8th c.BC: Ilias Homerus Epicus “Illiad” 24.603, 5th c.BC: Herodotus Historicus 1.30; τοίπερ 8th c.BC: Odyssea Homerus Epicus “Odyssey” 13.130; τάπερ 4th-5th c.BC: Aeschylus Tragicus “Choephori” 418 (Lyric poetry), 5th c.BC: Herodotus Historicus 3.16; τῶνπερ 8th c.BC: Ilias Homerus Epicus “Illiad” 13.638, 4th-5th c.BC: Aeschylus Tragicus “Agamemnon” 974 ] Refs 8th c.BC+]; on concord and construction [[compare ὅς 5th c.BC: Bacchylides Lyricus 1.1,2,4, 11.1a ] Refs 5th c.BC+],3, IV. 4:—the very man who, the very thing which; frequently indistinguishable from simple ὅς,[[compare ὅσος 111.4: with words intervening between ὅς] Refs] and περ, ὅς ῥ᾽ ἔβαλέν περ [[ 8th c.BC: Ilias Homerus Epicus “Illiad” 4.524, compare 13.101, etc. ] Refs 8th c.BC+]
__2 used after adjectives of resemblance, ὡυτὸς ὅσπερ [[ 5th c.BC: Herodotus Historicus 8.42; ἐκ τῶν ἴσων.., ὧνπερ αὐτὸς ἐξέφυ 5th c.BC: Sophocles Tragicus “Oedipus Tyrannus” 1499 ] Refs 5th c.BC+]; ὅμοια ἔπραττον ἅπερ ἄν.. [[ 5th-6th c.BC: Xenophon Historicus “Anabasis” 5.4.34 ] Refs 5th c.BC+]; ὅρκια τάπερ τε.. the same as.., [[ 5th c.BC: Herodotus Historicus 1.74. ] Refs 5th c.BC+]
__II special uses of cases,
__II.1 ὅπερ, wherefore, [[ 1st c.BC: Diodorus Siculus Historicus 13.18 codices (assuming variant)] Refs 1st c.BC+]; although, [[ 2nd c.AD: Apollonius Dyscolus Grammaticus “de Pronominibus;” 103.7. ] Refs 2nd c.AD+]