Eastern Peripheral Nahuatl

Eastern Peripheral Nahuatl is a group of Nahuatl languages, including the Pipil language of El Salvador and the Nahuatl dialects of the Sierra Norte de Puebla, southern Veracruz, and Tabasco (Isthmus dialects):
The boundaries of Eastern Nahuatl are not clear. Southeastern Puebla (Tehuacan-Zongolica) is particularly ambiguous. Hasler (1996:164) summarizes the situation, 