Denver, Wichita, Lexington, and Providence. None are strictly connected to one regional. One group in Provence can feed into East/Newark, another could feed into South/Georgia.

They will seed teams and then give geographical preference to the highest seeds to connect them to certain first round sites. Aka St Johns may get seeded to Providence. Michigan State may get seeded to Milwaukee.

The problem is if BYU gets a 6 seed, they are basically just at the whim of whatever preferential location the 3 seeds get. If all four 3 seeds are closer to Friday-Sunday sites, or maybe three of the four 3 seeds get put on Friday-Sunday but the remaining one is a Big 12 team, BYU gets put in a tough situation.