3. Dīcō, dūcō, faciō, form the Imperatives, dīc, dūc, fac. But compounds of faciō form the Imperative in -fice, as cōnfice. Compounds of dīcō, dūcō, accent the ultima; as, ēdū´c, ēdī´c.
4. Archaic and Poetic forms:—
a. The ending -ier in the Present Infinitive Passive; as, amārier, monērier, dīcier, for amārī, monērī, dīcī.
b. The ending -ībam for -iēbam in Imperfects of the Fourth Conjugation, and -ībō for -iam in Futures; as, scībam, scībō, for sciēbam, sciam.
c. Instead of the fuller forms, in such words as dīxistī, scrīpsistis, surrēxisse, we sometimes find dīxtī, scrīpstis, surrēxe, etc.
d. The endings -im, -īs, etc. (for -am, -ās, etc.) occur in a few Subjunctive forms; as, edim (eat), duint, perduint.
5. In the Future Active and Perfect Passive Infinitive, the auxiliary esse is often omitted; as, āctūrum for ācturum esse; ējectus for ējectus esse.
FORMATION OF THE VERB STEMS.
Formation of the Present Stem.
[117]. Many verbs employ the simple Verb Stem for the Present Stem;[[39]] as, dīcere, amāre, monēre, audīre. Others modify the Verb Stem to form the Present, as follows:—
1. By appending the vowels, ā, ē, ī; as,—
| Present Stem | Verb Stem | |
| juvāre, | juvā- | juv-. |
| augēre, | augē- | aug-. |
| vincīre, | vincī- | vinc-. |