18
14
11000000000011
11100000000011
11110000000011
11110000000011
11011000000011
11001100000011
11001100000011
11000110000011
11000011000011
11000011000011
11000001100011
11000000110011
11000000110011
11000000011011
11000000001111
11000000001111
11000000000111
11000000000011
