Binary (61,4)-code with minimal distance 32 

[1111000000000000111100001111111111110000111100001111000011110]
[0000111100000000000011111111111100001111111100000000111111110]
[0000000011110000111111111111000000000000000011111111111111110]
[0000000000001111000000000000000011111111111111111111111111110]