if you have a proper F9, try this:
F9(Messi)
IFa(Villa) IFs(Pedro)
CMa (Iniesta) CMs(Xavi)
DMd(Busquets)
WBs (Abidal) BPDd (Pique) CDd(Mascherano) WBa(Alves)
SKa(Valdes)
or at least you should set your BBMs a left midfielder and your MEZa a right midfielder. besides, you dont need so many special roles like BBM MEZ DLP etc.
sorry for my english。