The generator matrix

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

generates a code of length 21 over Z8 who´s minimum homogenous weight is 15.

Homogenous weight enumerator: w(x)=1x^0+108x^15+359x^16+584x^17+1073x^18+1972x^19+2702x^20+2840x^21+2580x^22+2004x^23+1176x^24+600x^25+246x^26+76x^27+50x^28+8x^29+4x^30+1x^34

The gray image is a code over GF(2) with n=84, k=14 and d=30.
This code was found by Heurico 1.16 in 4.22 seconds.