Concentration Grid – 9×14 grid in 11:11 min Concentration Grid 7 years ago Concentration Grid – 9×14 grid in 11:11 min GRID_ID91-C9R14-GR126T671.635 125N0.367-16X32.038-H39-DT20161215-214130 www.concentrationgrid.com www.facebook.com/concentrationgrid www.twitter.com/ConcentrationGr