d28x16
6000000000011111111111111111
6000000000011111111204444441
6000070003100007000230107001
1111111113211111110230111111
0000700003200007000230111111
3111111111201151110230111111
3000087000200000070230008000
1111111113201155510111111113
0700000003200007000000000003
3111111111201151110000000003
3007000000200000070000000003
1111111113201155510011111003
0000000073200000070010071003
3111111111201151110000311003
3000800000009000000000310703
1111111111111111111111111111