Soph. OT 523
ἀλλ᾽ ἦλθε μὲν δὴ τοῦτο τοὔνειδος τάχ᾽ ἂν
ὀργῇ βιασθὲν μᾶλλον ἢ γνώμῃ φρενῶν.
Perhaps it was a sudden gust of anger
that forced that insult from him, and no judgement.
— David Grene 1942
In the Bristol reprint of the 1897 revised edition of Soph. OT by R.C. Jebb there is a line in middle of a long note on S.OT 523 reading:
We cannot take τάχ᾽ ἂν as ...