go test fuzz v1
[]byte("----0000000100000200000700000800000900000A00000B00000C00000X00000Y00001000101000200010200020007010007000107000200080100080001080002000901000902000A01000A02000B01000B02000C01000C02000X01000X02000Y01000Y0200001100000Z000000a000000b000000c000000x0----000100000000")
