d28x16
1111111334444444444331111111
1111113300040000400033111111
1111133000001881000003311111
1111330000401111040000331111
1113300004011111104000033111
1133444440111111110444443311
1330000401111771111040000331
3300000011111111111100000033
1330000401111771111040000331
1133000040111111110400003311
1113300004011111104000033111
1111330000401111040000331111
1111133000040000400003311111
1111113300000000000033111111
1111111338000900008331111111
1111111111111111111111111111