Binary (18,10)-code with minimal distance 4 

[100000001100000001]
[010000001010000001]
[001000001001000001]
[000100001000100001]
[000010001000010001]
[000001001000001001]
[000000101000000101]
[000000011000000011]
[000000000101010101]
[000000000010101010]