Binary (68,31)-code with minimal distance 12

[10000000000011110100000000000111101000000000001111010000000000011110]
[01000000000011101010000000000111010100000000001110101000000000011101]
[00100000000011011001000000000110110010000000001101100100000000011011]
[00010000000011000000100000000110000001000000001100000010000000011000]
[00001000000001111000010000000011110000100000000111100001000000001111]
[00000100000001100000001000000011000000010000000110000000100000001100]
[00000010000001010000000100000010100000001000000101000000010000001010]
[00000001000001001000000010000010010000000100000100100000001000001001]
[00000000100010110000000001000101100000000010001011000000000100010110]
[00000000010010101000000000100101010000000001001010100000000010010101]
[00000000001010011000000000010100110000000000101001100000000001010011]
[00000000000100111000000000001001110000000000010011100000000000100111]
[00000000000000000100000001110011000000000000000000010000000111001100]
[00000000000000000010000001110000110000000000000000001000000111000011]
[00000000000000000001000001001110100000000000000000000100000100111010]
[00000000000000000000100001001011010000000000000000000010000100101101]
[00000000000000000000010000101101010000000000000000000001000010110101]
[00000000000000000000001000100110110000000000000000000000100010011011]
[00000000000000000000000100011001110000000000000000000000010001100111]
[00000000000000000000000010010111100000000000000000000000001001011110]
[00000000000000000000000000000000001000000000011111111110000000000100]
[00000000000000000000000000000000000100000000011111000001111100000100]
[00000000000000000000000000000000000010000000011110100001000011110100]
[00000000000000000000000000000000000001000000011001011000110011100100]
[00000000000000000000000000000000000000100000011000110101101010001100]
[00000000000000000000000000000000000000010000010110010010100111001100]
[00000000000000000000000000000000000000001000010100001110010001111100]
[00000000000000000000000000000000000000000100001100010111010110100100]
[00000000000000000000000000000000000000000010001001100110011100011100]
[00000000000000000000000000000000000000000001000101011010101100110100]
[00000000000000000000000000000000000000000000100010111011001001011100]