The 2. aor. mid. inf. in Hom. is recessive in ἀγέρεσθαι (ἀγείρω
N.—The present inf. of contracted verbs and the second aorist active inf. of ω-verbs have the perispomenon by 424 c.
b. Participles.—(1) Oxytone: the masculine and neuter sing. of the second aorist active, as λιπών, λιπόν; and of all participles of the third declension ending in -ς in the masculine (except the first aorist active), as λυθείς λυθέν, λελυκώς λελυκός, ἑστώς ἑστός, τιθείς τιθέν, διδούς διδόν, ἱστά_ς ἱστάν, δεικνύ_ς δεικνύν (but λύ_σα_ς, ποιήσα_ς). Also ἰών
(2) Paroxytone: the perfect middle (passive): λελυμένος.
N.—Participles are accented like adjectives, not like verbs. The fem. and neuter nom. accent the same syllable as the masc. nom. if the quantity of the ultima permits, thus παιδεύων, παιδεύουσα, παιδεῦον (not παίδευον); ποιήσα_ς, ποιήσα_σα, ποιῆσαν (not ποίησαν); φιλῶν, φιλοῦσα, φιλοῦν (from φιλέον).
Herbert Weir Smyth [n.d.], A Greek Grammar for Colleges; Machine readable text [info] [word count] [Smyth].