corristeis
-you ran
The word corristeis is the preterite form of correr in the second person plural.
See the full correr conjugation

correr

¿Por qué simplemente no corristeis en cuanto abrió la puerta?
Why didn't you guys just run as soon as he opened the door?
¿Dónde corristeis el domingo?
Where did you race sunday?
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