I auditioned for Millikin at regional auditions that didn't have a dance portion. They called me back and said they would accept me if I performed some dances moves on tape. They include:
-Right and left pirouettes (turns) turned out (single, double, triple, whatever)
-Grand Jettes (leaps) on both legs
-Grand Battements (kicks) on both legs, devant (to the front) and in second position
-Grand Plie (turned out in 1st, 2nd, and 5th; parallel in 1st and 2nd)
-Temps Leve, right and left
-And a short, simple ballet or jazz solo
I'm assuming their dance combinations at auditions includes all of the above (minus the solo dance) and therefor, probably isn't extemely complicated. And if you don't know some of this stuff... now you have time to look it up!
Best of luck!