Floodfill: 3, 0, 10, 6 -> 000a3395|0, 3, 15, 18 -> 005b51ba|18, 6, 21, 9 -> 0000d455|24, 6, 39, 14 -> 0024a4f3|39, 6, 54, 14 -> 00157149|19, 12, 21, 14 -> 00008aa9|6, 15, 9, 17 -> 0001bd07