Binary (20,9)-code with minimal distance 7 

[10000000011010100101]
[01000000011001010111]
[00100000011000111010]
[00010000010110010011]
[00001000010101100110]
[00000100010100111101]
[00000010010011101011]
[00000001010011011100]
[00000000101111111111]