Sweeper?!?

Is there anyway to have a formation function with a sweeper style formation like:

ST
AML AMR
CM CM
DML DMC DMC DMR
DC

Possible have the DML and DMR with down arrows or something...just wondering if anyone has ever tired it or thinks it would be functional at all

it will be an illegal formation, you need to have at least 3 defenders.

thanks..thats what i thought. I guess I would just have to give one of my DCs a down arrow for a similar sweeper function