Final answer:
The question does not provide the specific tribe and state pairing with the largest Indian law enforcement agency in 2012.
Step-by-step explanation:
Based on the information given, the 2012 pairing with the largest Indian law enforcement agency, consisting of 393 full-time officers, is not provided. The question does not provide a list of tribe and state pairings to choose from, so it is not possible to determine the exact pairing based on the information given.