[ARRANGEMENT OF THE VERB.]
[741.] Verbs are divided into two classes, according to the form of the present system: I. Root verbs, and verbs in -ere, mostly primitive; II. Verbs in -āre, -ēre, or -īre, mostly denominative.
[742.] Verbs are sometimes arranged without regard to difference of kind, in the alphabetical order of the vowel before -s of the second person singular of the present indicative active, ā, ē, i, ī: thus, laudās, monēs, regis, audīs, sometimes called the first, second, third, and fourth conjugation respectively.
[I. Primitive Verbs.]
[743.] A few of the oldest and commonest verbs of everyday life have a bare root as stem in the present indicative or in parts of it; and some of them have other peculiarities; such are called Root Verbs, or by some, irregular ([744-781]). Most primitives are verbs in -ere, like regō ([782]).
[(A.) ROOT VERBS.]
Irregular Verbs.
[(a.) With a Prevalent Bare Root.]
[744.] Primitives with the bare root as present indicative stem in almost all their forms are sum, am, dō, give, put, and compounds; and with the root doubled, bibō, drink, serō, sow, and sistō, set.