Binary (40,21)-code with minimal distance 8

[1000000000000000000001101101110011011000]
[0100000000000000000001011101110000011011]
[0010000000000000000001000101101101000101]
[0001000000000000000001001001101010101001]
[0000100000000000000001110100101001000000]
[0000010000000000000001101000100111100010]
[0000001000000000000001011000100110010101]
[0000000100000000000000111001011110100011]
[0000000010000000000000100101100001010010]
[0000000001000000000000010101010001001010]
[0000000000100000000000001101001001000110]
[0000000000010000000000111100000100011110]
[0000000000001000000000000000110101001011]
[0000000000000100000000000000110010101110]
[0000000000000010000000000000110001110101]
[0000000000000001000000000000101100100111]
[0000000000000000100000000000101011001101]
[0000000000000000010000000000101001111010]
[0000000000000000001000000000100111010110]
[0000000000000000000100000000100110111001]
[0000000000000000000010000000011111111111]