Preferíais
Preferíais is the second-person plural form of the Spanish verb preferir in the pretérito imperfecto de indicativo. It corresponds to “you all were preferring” or “you all used to prefer,” and is used with the pronouns vosotros or vosotras. This form is typical of Peninsular Spanish; in most of Latin America the equivalent is ustedes preferían.
Morphology and form: The imperfect of -ir verbs in Spanish uses endings such as -ía, -ías, -ía,
Usage: The imperfect tense describes habitual or ongoing past actions, past descriptions, or states without specifying
Examples: “Cuando éramos niños, vosotros preferíais la playa a la montaña.” “Antes, vosotros preferíais comer temprano.”