12 iterations of recursive 2x2 pattern layering, each iteration being a different pattern. The patterns are listed below, from least to most significant:
- 0123, 0132, 0213, 0231, 0312, 0321, 1023, 1032, 1203, 1302, 2013, 2103
The 12 layers of iterations are separated by channel. Blue, green, red.