18
17
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00111111111111100
01111100000111110
01111000000011110
01110000000001110
11100000000000111
11100000000000111
11100000000000111
11100000000000111
11100000000000111
11100000000000111
01110000000001111
01111000000011110
01111100000111110
00111111111111100
00011111111111000
00000111111100000
