For a while the bus schedule for my daily bus to work was "every 2 to 7 minutes" (no kidding). Do I have to add that sometimes you had to wait 20 minutes for th

For a while the bus schedule for my daily bus to work was "every 2 to 7 minutes" (no kidding). Do I have to add that sometimes you had to wait 20 minutes for the next bus (but then came 3)? ;-)