Binary (31,13)-code with minimal distance 9 

[1000000000000101111110011110001]
[0100000000000000110001111001010]
[0010000000000000111101001101100]
[0001000000000011000110001101100]
[0000100000000100010110100111000]
[0000010000000110100010101111110]
[0000001000000110001101011111110]
[0000000100000011110101010111000]
[0000000010000001111000100111011]
[0000000001000111111011011101010]
[0000000000100011100000110010111]
[0000000000010010111011110110001]
[0000000000001100010100111110111]