MPE = Phoenix (Potomac) + MAD (Sprad)

Potomac left and Dom took his place.
Potomac came back and took the place of Sprad.
Potomac left again and Outlawz came in.
Dom became inactive and Outlawz lead MPExWAR so DA took both their place.

So...
Potomac & Sprad
Sprad and Dom
Potomac and Dom
Dom and Outlawz
DA