Dissyllabic prepositions that follow their noun or verb are accented on the penult (i. e. they suffer anastrophe of accent). And under similar circumstances the monosyllables “εἰς, ἐν”, and “ἐξ”, receive an accent. E. g. A 162, “ᾧ ἔπι πόλλ᾽ ἐμόγησα”, ‘for which I toiled much.’ A 350, “θῖν᾽ ἔφ̓ ἁλὸς πολιῆς”, ‘to the strand of the hoary sea.’ B 39, “θήσειν γὰρ ἔτ᾽ ἔμελλεν ἔπ̓ ἄλγεα κτλ.”, where “θήσειν ... ἔπ̓” is for “ἐπι-θήσειν”. A 125, “πολίων ἔξ”, ‘out of the cities.’ A 222, “δώματ᾽ ἔς”.
But a monosyllabic preposition is not accented when placed between two nouns (or a noun and adjective) in agreement. Under similar circumstances the accent of a dissyllabic preposition is retracted only when the former noun is more important.
