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δῆλον

Ἐδιζησάμην ἐμεωυτόν -> I searched out myself
Heraclitus, fr. 101B

Russian (Dvoretsky)

δῆλον: adv. (тж. δ. δέ) ясно, очевидно, действительно Soph., Thuc., Arst., Theocr.