Chilean Spanish also notably uses the diphthong . In Ladino, the -áis, -éis, -ís, & -ois endings are pronounced , , , & . In Chile, it is much more usual to use tú + vos verb conjugation (tú sabís). The use of pronominal vos (vos sabís) is reserved for very informal situations and may even be considered vulgar in some cases. Present indicative General conjugation: the final -r of the infinitive is replaced by -s; in writing, an acute accent is added to the last vowel (i.e. the one preceding the final -s) to indicate stress position. Chilean: the -ar ending of the infinitive is replaced by -ái both -er and -ir are replaced by -ís, which sounds more like -íh. Venezuelan (Zulian): practically the same ending as modern Spanish vosotros, yet with the final -s being aspirated so that: -áis, -éis, -ís sound like -áih, -éih, -íh (phonetically resembling Chilean). Unlike tú, which has many irregular forms, the only voseo verbs that are conjugated irregularly in the indicative present are ser, ir and haber. However, haber is seldom used in the indicative present, since there is a strong tendency to use preterite instead of present perfect. Affirmative imperative Vos also differs in its affirmative imperative conjugation from both tú and vosotros. Specifically, the vos imperative is formed by dropping the final -r from the infinitive, but keeping the stress on the last syllable. The only verb that is irregular in this regard is ir; its vos imperative is not usually used, with andá (the vos imperative of andar, which is denoted by *) being generally used instead; except for the Argentine province of Tucumán, where the imperative ite is used. For most regular verbs ending in -ir, the vos imperatives use the same conjugations as the yo form in the preterite; almost all verbs that are irregular in the preterite (which are denoted by ‡) retain the regular vos imperative forms. Again, the conjugation of tú has far more irregularities, whereas vos has only one irregular verb in the affirmative imperative. In Chile, the general vos conjugation is not used in the affirmative imperative. Subjunctive In most places where voseo is used, it is applied also in the subjunctive. In the Río de la Plata region, both the tú-conjugation and the voseo conjugation are found, the tú-form being more common. In this variety, some studies have shown a