Binary (42,31)-code with minimal distance 4

[100000000000000001001000000000000000010000]
[010000000000000001000100000000000000010000]
[001000000000000001000010000000000000010000]
[000100000000000001000001000000000000010000]
[000010000000000001000000100000000000010000]
[000001000000000001000000010000000000010000]
[000000100000000001000000001000000000010000]
[000000010000000001000000000100000000010000]
[000000001000000001000000000010000000010000]
[000000000100000001000000000001000000010000]
[000000000010000001000000000000100000010000]
[000000000001000001000000000000010000010000]
[000000000000100001000000000000001000010000]
[000000000000010001000000000000000100010000]
[000000000000001001000000000000000010010000]
[000000000000000101000000000000000001010000]
[000000000000000011000000000000000000110000]
[000000000000000000001000000001100000000100]
[000000000000000000000100000001010000000100]
[000000000000000000000010000001001000000100]
[000000000000000000000001000001000100000100]
[000000000000000000000000100001000010000100]
[000000000000000000000000010001000001000100]
[000000000000000000000000001001000000100100]
[000000000000000000000000000101000000010100]
[000000000000000000000000000011000000001100]
[000000000000000000000000000000100011000100]
[000000000000000000000000000000010010100100]
[000000000000000000000000000000001010010100]
[000000000000000000000000000000000110001100]
[000000000000000000000000000000000001111110]