Binary (28,12)-code with minimal distance 8 

[1000000000001111101010011101]
[0100000000001110011000101101]
[0010000000000011100101110011]
[0001000000001011010100001010]
[0000100000001010101100000110]
[0000010000001101000010101010]
[0000001000000101100001101100]
[0000000100001001100000011110]
[0000000010000000010111010101]
[0000000001000000001110110011]
[0000000000100000011100001111]
[0000000000010000000001111111]