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Cook the pasta, according to the directions.
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Rinse with cold water, drain.
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Grate the limes and place the peel in a bowl.
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Squeeze the juice from the limes and add to the bowl with the ranch dressing, taco seasoning, and chopped avocado. Stir.
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In a large bowl, toss the pasta with the remaining ingredients: cheese, olives, beans, cilantro, tomatoes, and chiles.
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Right before serving, pour the dressing on top and mix well.