The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2  1  1  1  1  0  1  1  1  0  1  2  1  2  2  1  1  2  4  1  1  4  0  1  2  0  1  1  2  1  2  4  1
 0  2  0  2  0  0  2  6  0  4  6  2  0  2  2  0  4  4  6  2  0  0  2  4  4  2  0  6  6  0  4  4  2  6  0  0  0  2  2  4  4  2  0  2  2  2  4  2  2  4  6  2  2  6  6  0  4  4  2  6  6  2  4
 0  0  2  2  0  6  2  0  4  2  0  2  0  6  4  6  2  2  4  0  4  0  6  4  4  6  2  2  6  6  2  2  2  0  0  2  0  6  4  2  6  2  2  6  2  4  2  6  6  6  4  6  0  4  0  2  0  2  2  6  0  2  2
 0  0  0  4  0  0  0  0  4  4  4  0  4  0  4  0  0  0  4  0  4  4  4  0  0  4  0  0  4  0  4  4  0  4  0  0  4  4  4  0  0  4  0  0  0  4  0  0  0  4  4  0  4  0  0  4  4  0  4  0  4  4  0
 0  0  0  0  4  0  0  0  0  0  0  0  4  0  0  0  4  4  4  4  0  4  0  4  0  4  4  4  0  4  0  4  0  0  0  4  0  4  4  4  4  4  0  4  0  4  4  4  4  4  0  0  0  0  0  0  0  4  0  4  0  0  0
 0  0  0  0  0  4  0  0  0  4  0  4  4  4  4  4  4  0  4  0  0  0  4  4  0  4  4  0  0  0  0  4  0  0  0  0  4  0  0  4  4  0  4  4  0  4  0  0  4  0  0  0  4  4  0  4  4  4  4  0  0  4  0
 0  0  0  0  0  0  4  0  4  4  4  4  4  4  4  0  0  0  4  0  4  4  0  0  0  0  0  4  0  0  4  4  0  0  4  4  0  4  0  4  4  4  4  0  4  0  4  0  0  0  0  0  4  4  0  0  0  4  0  0  0  4  0
 0  0  0  0  0  0  0  4  0  0  0  4  0  0  4  4  4  4  0  4  4  0  4  0  4  4  0  0  4  4  0  4  4  4  0  0  4  0  4  0  4  0  4  0  0  0  0  4  4  4  0  4  0  4  0  0  0  4  4  0  4  4  4

generates a code of length 63 over Z8 who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+55x^54+76x^55+124x^56+160x^57+182x^58+258x^59+278x^60+356x^61+400x^62+414x^63+405x^64+358x^65+280x^66+186x^67+158x^68+110x^69+75x^70+78x^71+50x^72+34x^73+20x^74+12x^75+4x^76+6x^77+5x^78+4x^80+6x^82+1x^94

The gray image is a code over GF(2) with n=252, k=12 and d=108.
This code was found by Heurico 1.16 in 1.1 seconds.