The generator matrix

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

generates a code of length 18 over Z8 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+238x^12+264x^13+1224x^14+1904x^15+4180x^16+4984x^17+7084x^18+5024x^19+4302x^20+1912x^21+1200x^22+240x^23+170x^24+8x^25+28x^26+4x^28+1x^32

The gray image is a code over GF(2) with n=72, k=15 and d=24.
This code was found by Heurico 1.16 in 40.6 seconds.