Answer:
7 * 6 * 5 / 6 = 35 (order doesnt matter)
Explanation:
Brett Carl Duane
Brett Carl Andrew
Brett Carl Ethan
Brett Carl Felipe
Brett Carl Griswold
Brett Duane Andrew
Brett Duane Ethan
Brett Duane Felipe
Brett Duane Griswold
Brett Andrew Ethan
Brett Andrew Felipe
Brett Andrew Griswold
Brett Ethan Felipe
Brett Ethan Griswold
Brett Felipe Griswold
Carl Duane Andrew
Carl Duane Ethan
Carl Duane Felipe
Carl Duane Griswold
Carl Andrew Ethan
Carl Andrew Felipe
Carl Andrew Griswold
Carl Ethan Felipe
Carl Ethan Griswold
Carl Felipe Griswold
Duane Andrew Ethan
Duane Andrew Felipe
Duane Andrew Griswold
Duane Ethan Felipe
Duane Ethan Griswold
Duane Felipe Griswold
Andrew Ethan Felipe
Andrew Ethan Griswold
Andrew Felipe Griswold
Ethan Felipe Griswold