1 as well
2 ask for
3 ask for a refund
4 ask somebody for a ride
5 at all
6 at hand
7 at home
8 at home with
9 at least
10 at once
11 at one time
1 at the bus station
2 at the end of
3 at the most/at most
4 at your service
5 at this point
6 audition for
7 auto show
8 back out
9 back to normal
10 back up
11 baggage claim area
12 baggage counter