Show code
9999ccccaaaa9999
aaaa1111cccc2222
8888aaaa3333dddd
666600000000dddd
aaaaccccffff6666
ffff7777bbbb7777
444422221111ffff
1111333300008888
8888000033331111
ffff111122224444
7777bbbb7777ffff
6666ffffccccaaaa
dddd000000006666
dddd3333aaaa8888
2222cccc1111aaaa
9999aaaacccc9999