dim: 21 19
xxxxxxxxxxxxxxxxxxx
xxxxsssssssssssxxxx
xxx.............xxx
xxx.............xxx
xxxx...........xxxx
xxxx...........xxxx
xxxxx.........xxxxx
xxxxxx.......xxxxxx
xxxxxxx.....xxxxxxx
xxxxxxxx...xxxxxxxx
xxxxxxxxx.xxxxxxxxx
xxxxxxxx...xxxxxxxx
xxxxxxx.....xxxxxxx
xxxxxx.......xxxxxx
xxxxx.........xxxxx
xxxx...........xxxx
xxxx...........xxxx
xxx.............xxx
xxx.............xxx
xxxxgggggggggggxxxx
xxxxxxxxxxxxxxxxxxx