Definitive Illegal Formation Rules

[nsretkovic]

1 of my friend uses this formation and got 20% ball possesion. It meets ALL requirements. I don't know why it's illegal.

---ST ST ST---

----MC MC-----

DL DC DC DC DR
------GK-------

Because you need to have 3 M (Mc, aMc, aMl, aMr etc...) players in the formation