Warm flour tortillas separately in foil. Soak beans overnight, or for 6-8 hours, then simmer in ample fresh water for 2 hours to cook. Drain and set aside. May use any beans desired. Cook rice in 1/2 cup water for 20 minutes. See separate recipe for Chipotle Sauce. Stir chicken and beans into cooked rice and warm on stovetop. Assemble burritos with all ingredients. May warm in oven briefly if desired, but be careful not to dry out tortillas! Enjoy!