19
12
000000001111
000000001111
000000001111
000000001111
000000001111
000000001111
000000001111
000000001111
000000001111
000000001111
000000001111
000000001111
111100001111
111100001111
111110011111
011111111111
011111111110
001111111100
000111111000
