It is used in the following ways:
* With the auxiliary verb "avoir" (to have) to form the passé composé (past tense):
* J'ai voulu (I wanted)
* Tu as voulu (You wanted)
* Il/Elle/On a voulu (He/She/One wanted)
* Nous avons voulu (We wanted)
* Vous avez voulu (You wanted)
* Ils/Elles ont voulu (They wanted)
* With the auxiliary verb "être" (to be) in certain constructions, such as the passé composé of reflexive verbs and some impersonal verbs:
* Je me suis voulu (I wanted myself - not commonly used)
* As an adjective to describe something that was wanted:
* Un cadeau voulu (A wanted gift)
It's important to note that "voulu" is not commonly used as a past participle in everyday speech. In most cases, you would use the past tense with "avoir" (ai voulu, as voulu, etc.).