RRRRRRRRRRRG
RGBBGRBBGRBG
RRBGGBBGGBBG
RRBGGBBGGBBG
RRBGGBBGGBBG
RRBGGBBGGBBG
RRBGGBBGGBBG
RRBGGBBGGBBG
RRGGGBBGGBBG
BBGGGBBGGBBG
GRBGRBRGRBRG
GRRRRBRRRBRR