All irregular verbs form their imperfecto de subjuntivo in a regular way, as mentioned in the very first exercise of this series. As an example of the conjugation of the irregular verbs in the imperfecto de subjuntivo, conjugate the verb poder, using the endings in -ra. As before, start conjugation forms with a small letter. Press Tab to check your answer. You might wish to use one of the two following on-line helpers to complete your ejercicio: conjugador and acentos en español. ¡Suerte!