the plural, it becomes ’e lliste. There can also be problems with nouns whose singular form ends in e. Since plural nouns usually end in e whether masculine or feminine, the masculine plural is often formed by orthographically changing the spelling. As an example, consider the word guaglione (which means "boy" or "girl" in the feminine form): More will be said about these orthographically changing nouns in the section on Neapolitan nouns. A couple of notes about consonant doubling: Doubling is a function of the article (and certain other words), and these same words may be seen in other contexts without the consonant doubled. More will be said about this in the section on consonant doubling. Doubling only occurs when a vowel follows the consonant. No doubling occurs if it is followed by another consonant, such as in the word spagnuolo (Spanish). Indefinite articles The Neapolitan indefinite articles, corresponding to the English a or an, are presented in the following table: Verbal conjugation In Neapolitan there are four finite moods: indicative, subjunctive, conditional and imperative, and three non-finite modes: infinitive, gerund and participle. Each mood has an active and a passive form. The only auxiliary verbs used in the active form is (Eng. "to have", It. avere), which contrasts with Italian, in which the intransitive and reflexive verbs take èssere for their auxiliary. For example, we have: Doubled initial consonants In Neapolitan, many times the initial consonant of a word is doubled. This is called raddoppiamento sintattico in Italian as it also applies to the Italian phonology. All feminine plural nouns, preceded by the feminine plural definite article, ’e, or any feminine plural adjective, have their initial consonant doubled. All neuter singular nouns, when preceded by the neuter singular definite article, ’o, or by a neuter singular adjective, have their initial consonant doubled. In addition, other words also trigger this doubling. Below is a list of words that trigger the doubling of the initial consonant of the following word. However, when there is a pause after the "trigger" word, the phonological doubling does not occur (e.g. tu sî (g)guaglione, [You are a boy], where sî is a "trigger" word causing doubling of the initial consonant in guaglione but in the phrase ’e do sî, guaglió? [Where are you from, boy?] no doubling occurs). Neither does doubling occur when the initial consonant is followed by another consonant (e.g. ’o ttaliano [the