Quechua I, also known as Quechua Wáywash, 1 or Quechua B, 2 is
one of the two branches or genealogical groups of the Quechua
languages. It is composed of a great diversity of linguistic varieties
distributed in the mountains of central Peru, in the departments of
Ancash, Huánuco, Pasco, Junín and Lima. This
Huaylas Conchucos Western Huayhuash Average Huayhuash Oriental Huayhuash Mantaro Valley Huánuco-Marañón Huánuco-Huallaga
Later (1974), Torero presents two ways of grouping these languages. The first, in relation to its proximity to the most extreme dialects, the Callejón de Huaylas and the huanca, nominating both groups as Wáylay and Wánkay respectively. Both would differ in the pluralization of verbs. In parallel, it presents five zones based on the intercommunication of speakers:
Zone 1: Ancash-Conchucos (Wáylay) Zone 2: Alto Marañón-Alto Huaura-Alto Huallaga (Intermediate between Wáylay and Wánkay) Zone 3: Yaru Zone 4: Jauja-Huanca Zone 5: Huangáscar-Topará (eventually immersed in Quechua Yauyino)
^ Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds.
(2017). "Quechua I".