Participles.—The stem of the participle is formed by adding the following endings to the tense stem.
a. -ντ-: in all active tenses except the perfect, and in 1 and 2 aor. passive ( cross301).
b. -οτ-: in the perfect active (for -ϝοτ-); masc. -ώς, fem. -υῖα, neut. -ός ( cross301 c).
c. -μενο-: in the middle, and in the passive except in the aorist.
Herbert Weir Smyth [n.d.], A Greek Grammar for Colleges; Machine readable text [info] [word count] [Smyth].