Binary (28,20)-code with minimal distance 4

[1000000000000000000011010110]
[0100000000000000000011001000]
[0010000000000000000011010011]
[0001000000000000000011001011]
[0000100000000000000011000111]
[0000010000000000000011000001]
[0000001000000000000011000010]
[0000000100000000000001010111]
[0000000010000000000001001001]
[0000000001000000000001010010]
[0000000000100000000001001010]
[0000000000010000000001000110]
[0000000000001000000010010100]
[0000000000000100000010001010]
[0000000000000010000010010001]
[0000000000000001000010001001]
[0000000000000000100010000101]
[0000000000000000010010000011]
[0000000000000000001000010101]
[0000000000000000000100001011]