1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
6 2 RG RB 4 GRBG GBGB 5 GGGGG BBBBB 7 BBBBBBB RRRRRRR 8 RGBRRGBR RGGRRBGR 1 G G