Binary (64,4)-code with minimal distance 33 

[1000111111111111111111111111111111110000000000000000000000000000]
[0100111111111111111100000000000000001111111111111111000000000000]
[0010111111111000000011111110000000001111111000000000111111111000]
[0001111100000111100011100001111100001110000111110000111110000111]