The generator matrix

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

generates a code of length 15 over Z8 who´s minimum homogenous weight is 10.

Homogenous weight enumerator: w(x)=1x^0+307x^10+880x^11+2139x^12+3650x^13+5912x^14+6712x^15+6209x^16+3916x^17+1995x^18+648x^19+323x^20+66x^21+10x^22

The gray image is a code over GF(2) with n=60, k=15 and d=20.
This code was found by Heurico 1.11 in 1.64 seconds.