20 An enclitic takes an accent a. If emphatic: ἀλλὰ σὲ καλῶ it's yοu I'm calling. b. If it begins a clause (being then always emphatic): φησὶ μέν he says, indeed. c. If the syllable next before is elided: ταῦτʼ ἐστί for ταῦτά ἐστι. d. Also, a disyllabic enclitic takes the acute on the ultima, if the word before it has an acute on the penult: λόγους τινάς. e. Ἔστι is written thus if it begins a clause, if it means exists or is possible, and if it follows oὐκ, μή, εἰ, ὡς, or καί.