......................oooo....
....................oobbbboo..
......ooo.........oobaaabbbbo.
....oobbboo......oaaaaaabbbbbo
...obbbbbbbo....oaaaaabbbbbcbo
..obbbbbbbbbo..obbabbbbbbccco.
..obbbbbbbbbbo.obbbbbbbcccoo..
...occcccbbbbbobbbbbccccoobbo.
....occcccccbccobbbccooobbbbo.
.....ooccccccccobbbcobbbbbbbo.
.......ooccccccobbccobbbbboo..
.........oocccobbccobbbooo....
...........occobbcobbbo.......
............ocobbcoboo........
.............oobPobo..........
...............oooo...........