how can I beat a 3-3-3-1 formation?

how can i beat this formation, i have never seen it before, is it illegal? any help would be much appreciated!

We need a picture of his team because 3-3-3-1 can be anything

of course,sorry! dc-dc-dc
dml-dmc-dmr
mc-mc-mc
st

he hasn't been beat yet, i play him away! he also plays 2mc, 1 atm, 1st,some one got a draw when he played that formation! any idea how to break him down, i like to play attacking footaball with aml,amr and st!