Rhet gre 1396b21-23πρῶτον δὲ εἴπωμεν περὶ ὧν (22) ἀναγκαῖον εἰπεῖν πρῶτον. ἔστιν γὰρ τῶν ἐνθυμημάτων εἴδη (23) δύο·
Rhys Roberts 1924 engWe will now consider the various elementary classes of enthymemes. (By an ‘elementary class’ of enthymeme I mean the same thing as a ‘line of argument’.)
http://www2.hf.uio.no/common/apps/permlink/permlink.php?app=polyglotta&context=record&uid=cf8b1152-1d51-11e7-ba66-0050569f23b2