ἄν with the infinitive expressing possibility, and representing either a potential indicative or a potential optative, occasionally follows ὥστε (ὡς).
a. Not in indirect discourse: καί μοι οἱ θεοὶ οὕτως ἐν τοῖς ἱεροῖς ἐσήμηναν ὥστε καὶ ἰδιώτην ἂν γνῶναι (= ἰδιώτης ἔγνω ἄν or γνοίη ἄν) ὅτι τῆς μοναρχία_ς ἀπέχεσθαί με δεῖ
ἀσφαλεῖ ἤδη ἔσομαι ὡς μηδὲν ἂν ἔτι κακὸν παθεῖν ( = οὐδὲν ἂν ἔτι πάθοιμι)
N.—Rarely in other cases. Thus, τὰ δὲ ἐντὸς οὕτως ἐκαίετο ὥστε . . . ἥδιστα ἂν ἐς ὕδωρ ψυ_χρὸν σφᾶς αὐτοὺς ῥί_πτειν ( = ἔρρι_πτον, cross2304) but their internal parts were inflamed to such a degree that they would have been most glad to throw themselves into cold water (
b. In indirect discourse: ἆρ' οὖν δοκεῖ τῳ ὑ_μῶν ὀλιγώρως οὕτως ἔχειν χρημάτων Νι_κόδημος ὥστε παραλιπεῖν ( = παρέλιπεν) ἄν τι τῶν τοιούτων;
Herbert Weir Smyth [n.d.], A Greek Grammar for Colleges; Machine readable text [info] [word count] [Smyth].