» Nepal's diverse linguistic heritage evolved from three major language groups: Indo-Aryan , Tibeto-Burman , and indigenous . Nepal is divided into 14 zones (anchal, singular and plural): Bagmati , Bheri, Dhawalagiri, Gandaki, Janakpur, Karnali, Koshi, Lumbini , Mahakali, Mechi, Narayani , Rapti , Sagarmatha and Seti.