behind, at the back
In front of in space.
In front of, according to a formal system of ordering items.
In store for, in the future of (someone).
At a higher or greater position than, in a ranking.
Under consideration, judgment, authority of (someone).
In the presence of.
Earlier than (in time).
At an earlier time.
In advance.
At the front end.
Rather or sooner than.
In advance of the time when.