Queen's Gambit Declined: Catalan Opening

1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.d4 Be7 5.Bg2 O-O 6.O-O dxc4 7.Qc2 a6 8.Qxc4 b5 9.Qc2 Bb7 10.Bf4 Nc6