5-1-2-2 counter?

please help !!!

What does 1-2-2 mean? DMC-2MC-2ST, MC-2AMC-ST or maybe 2 wingers and ST?

Dmc-2mc-2st

3n-1-4-2, 3-5-2. Red arrows on ML and MR, mixed passing through wings, zonal marking.

Thanks!