The Twelve Sources

The six faculties: eye- ear- nose- tongue- body- mental-
The six objects: forms sounds smells tastes tangibility phenomenon-sources

Alternatively:


The order of the six faculties is definite because: དབང་པོ་དྲུག་གི་གོ་རིམས་ངེས་ཏེ།


Up a level: Abhidharma