How many nfl teams have
- how many nfl teams have won back-to-back super bowls
- how many nfl teams have gone 0-16
- how many nfl teams have male cheerleaders
- how many nfl teams have a bye each week
- how many nfl teams have black quarterbacks
- how many nfl teams have real grass
- how many nfl teams have domes
- how many nfl teams have gone undefeated
- how many nfl teams have cheerleaders
- how many nfl teams have never won a superbowl
