The Imperfect is, in most cases, formed by taking the stem along with the thematic vowel and adding v + the ending of the -are verbs in the present tense (with -amo instead of -iamo). There are no irregular conjugations in the Imperfect except for essere, which uses the stem er- and v appears only in 1st and 2nd person plurals. Verbs with contracted infinitive forms use their full stems, e.g. dicevo (infinitive dire), facevo (infinitive fare), bevevo (infinitive bere), ponevo (infinitive porre).
