Input (grade 13): The Maya cities of the northern lowlands in YucatÃ n continued to flourish for centuries more; some of the important sites in this era were Chichen Itza, Uxmal, EdznÃ, and Coba.
Output (grade 6): Some of the important sites in this era were Chichen Itza, Uxmal, EdznÃ, and Coba.