There are several possible scenarios. As Richard stated, the official bracket will not be releasd until after Districts. One example is below:

D1 - 1st
D4 - 4th

D2 - 3rd
D3 - 2nd

D2 - 2nd
D3 - 3rd

D1 - 4th
D4 - 1st

D2 - 1st
D3 - 4th

D1 - 3rd
D4 - 2nd

D1 – 2nd
D4 – 3rd

D2 - 4th
D3 - 1st