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Mid-major is a term used in American Division I college sports , especially men 's basketball , to refer to athletic conferences that are not among the major six conferences ( the ACC , SEC , Big East , Big 10 , Big 12 , and Pac-12 , the programs of which are sometimes referred to as " high majors " by comparison ) .
 American Division I, ACC, SEC, Big East, Big 10, Big 12, Pac-12
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 American Division I, ACC, SEC, Big East, Big 10, Big 12, Pac-12