Answer:
Ir
Estar
Decir
Step-by-step explanation:
The irregular verbs in spanish are verbs that do not follow the same rules as the other verbs and change in their forms when are conjugated to different tenses. IN this case the verb Ir is fuera, fueran fuéramos, estar, estuviera. estuviéramos, estuviéran, dijeron, dije, dijimos, those are examples of irregular verbs in tiempo pretérito.