..oooo..............oooo..
.oxxxyo............oxyyzo.
.oxyyyyo..........oxyyyzo.
..oxyyyo..........oyyyzo..
...oxyyyo........oyyyzo...
....o1222o......o1223o....
....o12222o....o12223o....
.ooooo1222o....o2223ooooo.
o1111122333o..o3332222223o
.o122223ooo....ooo222223o.
.o1222223o......o2222223o.
..o122223o......o222223o..
...o122223o....o222223o...
...o122223o....o222223o...
....o122223o..o222223o....
....o1222223oP2222223o....
