Bulgarian verbs are the most complicated part of Bulgarian grammar, especially when compared with other Slavic languages. Bulgarian verbs are inflected for person, number and sometimes gender. They also have lexical aspect (perfective and imperfective), voice, nine tenses, three moods, four evidentials and six non-finite verbal forms. Because the subject of the verb can be inferred from the verb ending, it is often omitted. As there is no infinitive in the contemporary Bulgarian language the basic form of a verb is its present simple tense first person singular form.conjugationconjugationIncorrect pronunciationIncorrect spellingчетатчетъ̀тлетятлетьъ̀тPast ImperfectPast AoristPresent PerfectPast PerfectFuture TenseFuture Tense of съмFuture PerfectPast Future TensePast Future PerfectКу̀четоизя̀дерѝбатаКу̀чето изя̀де рѝбатаКу̀четоеизя̀лорѝбатаКу̀чето е изя̀ло рѝбатаКу̀четоизя̀лорѝбатаКу̀чето изя̀ло рѝбатаКу̀четобило̀изя̀лорѝбатаКу̀чето било̀ изя̀ло рѝбата Bulgarian verbs are the most complicated part of Bulgarian grammar, especially when compared with other Slavic languages. Bulgarian verbs are inflected for person, number and sometimes gender. They also have lexical aspect (perfective and imperfective), voice, nine tenses, three moods, four evidentials and six non-finite verbal forms. Because the subject of the verb can be inferred from the verb ending, it is often omitted. As there is no infinitive in the contemporary Bulgarian language the basic form of a verb is its present simple tense first person singular form. There are three conjugations. The conjugation of a verb is determined by the final vowel of the verb in the third person singular present simple tense. Verbs of the first conjugation end in e, of the second in и and of the third in а or я. Bulgarian verbs express lexical aspect (вид). The verbs are either of imperfective (глаголи от несвършен вид) or perfective (глаголи от свършен вид) aspect. The former describe actions in progress (uncompleted actions) and the latter whole completed actions (actions which have a beginning and an end). So in Bulgarian an English verb is usually translated by two verbs (or sometimes by even three, see below). Perfective verbs can be usually formed from imperfective ones by suffixation or prefixation, but when prefixes (or very rarely suffixes) are used the resultant verb often deviates in meaning from the original. There are not any strict rules and irregularities are very common. Nevertheless many verbs can be grouped according to their stem change: The verbs from one pair are of different conjugations, for example кажа is from the first conjugation and казвам from the third. In the past imperfect and the present tense perfective verbs cannot stand alone in an independent clause, in these tenses such verbs are used only in subordinate clauses. Very often when a perfective verb is formed from an imperfective one by means of a prefix (or rarely a suffix) this verb can be made again imperfective using a suffix. The resultant verb is called secondary imperfective verb (вторичен несвършен глагол). Here are some examples of such verbs: Verbs from the first type describe uncompleted actions (for example the verb мета could be roughly translated in English as to be sweeping), verbs from the second describe whole, completed actions. Verbs from the third type are a combination between the first two. Although they are imperfective as the initial ones, they preserve the perfective meaning of the second verbs, they are only grammatically imperfective.