"I left with my new friends."
Translation:D'imigh mé le mo chairde nua.
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d'imíos is the analytic form of d'imigh mé, mainly used in Munster Irish. It has been included as an acceptable answer for people who have learned the Munster dialect of Irish, but it only causes confusion for other learners when it is presented as the right answer, you should have been shown D'imigh mé le mo chairde nua.