d28x16
0000000000000000000000000000
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3111111001711711711003111111
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3111111111111151111111110000
3111111117070000707111110770
3111111111511151111111111111
3000000080000000000711111100
3003111113111113004311110073
3003003003003003000111007311
3003773773773773000100731111
3003111113111113000073111111
3000000000000009000311111111
3111111111111111111111111111