colaborasteis
-you collaborated
Preterite vosotros conjugation of colaborar.

colaborar

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Gracias a todos/as los/las que colaborasteis.
Thanks to everyone who collaborated.
Gracias a todos los que colaborasteis para organizar este evento y, por supuesto, gracias a todos vosotros por apoyarnos.
Thank you to everybody involved in organising this event and of course to you all for supporting us.
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