This is  Carlsen's preferred choice.
1. d2d4  1... g8f6  2. c2c4  2... e7e6  3. b1c3  3... f8b4  4. e2e3  4... e8g8  5. f1d3  5... c7c5  6. g1e2  6... d7d5  7. a2a3  7... b4c3  8. b2c3  8... d5c4  9. d3c4  9... d8c7 One of Nimzo-Indian tabias.