The generator matrix

 1  0  1  1  1  4  1  1  1  1  0  6  0  2  6  6  2  0  4  1  1
 0  1  1  4  3  1  2  7  6  5  1  1  1  1  1  1  1  0  1  0  2
 0  0  2  6  4  6  2  6  4  0  6  0  4  2  6  4  4  2  2  4  6

generates a code of length 21 over Z8 who´s minimum homogenous weight is 19.

Homogenous weight enumerator: w(x)=1x^0+64x^19+41x^20+80x^21+8x^22+32x^23+12x^24+16x^25+1x^28+1x^32

The gray image is a code over GF(2) with n=84, k=8 and d=38.
This code was found by Heurico 1.16 in 0.00324 seconds.