Binary (31,9)-code with minimal distance 12 

[1000000001111010000100001111010]
[0100000001100101100011001110010]
[0010000001100011010110101000110]
[0001000001011001001010011100110]
[0000100001010000111001000111110]
[0000010000110001011101011010010]
[0000001000100110011001110001110]
[0000000100010101101010110011010]
[0000000010001011101100100101110]