1......................................1111111111..........................................1
11..................................111111111111......................................11
1111............................11111111111111................................1111
111111......................1111111111111111..........................111111
11111111................111111111111111111....................11111111
1111111111..1..1..11111111111111111111..1..1..1..1111111111
11111111................111111111111111111....................11111111
111111......................1111111111111111..........................111111
1111............................11111111111111................................1111
11..................................111111111111.....................................11
1......................................1111111111.........................................1

__________________