Binary (52,7)-code with minimal distance 24 

[1000000111111111000000000111111100000000001111111110]
[0100000111100000111110000111000011111000001111100001]
[0010000111010000100001111110100011110100001000011111]
[0001000100101100011001110110010011001011000110011101]
[0000100010101010000111101110001010101010100001111011]
[0000010001001101110101001110000110010011011101010011]
[0000001000000000000000000001111111111111111111111111]