1 2 3 4 5 6 7
4 { 0, 16, 16, 16 } { 16, 16, 16, 16 } { 16, 16, 16, 16 } { 0, 16, 16, 16 } { 32, 16, 16, 16 } { 32, 16, 16, 16 }