Some of these differences may be dialectal variations. The personal pronouns are irregularly inflected: "yānŭ" "I" becomes "yen-" in oblique cases. Tulu makes the distinction between the inclusive and exclusive "we" (See "Clusivity: Dravidian languages"): "nama" "we (including you)" as opposed to "yenkuḷu" "we (not including you)". For verbs, this distinction does not exist. The personal pronouns of the second person are "ī" (oblique: "nin-") "you (singular)" and "nikuḷu" "you (plural)". Three genders are distinguished in the third person, as well as proximate and remote forms. For example, "imbe" "he (proximate)", "āye" "he (remote)". The suffix "-rŭ" makes a polite form of personal pronouns, as in "īrŭ" "you (respectfully)", "ārŭ" "he (remote; respectfully)". Postpositions are used usually with a noun in the genitive case, as in "guḍḍe-da mittŭ" "on the hill". Tulu verbs have three forms: active, causative, and reflexive (or middle voice). They conjugate for person, number, gender, tense (present, past, pluperfect, future, and future perfect), mood (indicative, imperative, conditional, infinitive, potential, and subjunctive), and polarity (positive and negative). Each sentence is composed of a subject and a predicate and every sentence is a full speech or thought in words. There is both singular and plural while being expressed in first through third person. There are several exceptions to each of these depending on the instance. For example: the verb has to be in a plural style if there are numerous nominatives within a sentence or of different genders that agree with the previous sentence. The verb may also be omitted in some sentences. Present tense and past tense may change and their perception. The written literature of Tulu is not as large as the literature of other literary Dravidian languages such as Tamil. Nevertheless, Tulu is one of only five literary Dravidian languages, the other four being Tamil, Telugu, Kannada and Malayalam. The earliest available Tulu literature that survives to this date is the Tulu translation of the great Sanskrit epic of Mahabharata called "Mahabharato" (ಮಹಾಭಾರತೊ).