The generator matrix

 1  0  0  0  0  1  1  1  6  1  1  1  1  1  0  3  6  0
 0  1  0  0  0  6  6  0  1  4  2  1  5  1  1  1  1  3
 0  0  1  0  0  6  7  1  5  5  1  6  3  8  1  7  3  1
 0  0  0  1  0  7  5  3  4  8  4  1  0  3  4  0  7  2
 0  0  0  0  1  5  2  7  2  3  1  1  8  4  7  2  5  7

generates a code of length 18 over Z9 who´s minimum homogenous weight is 26.

Homogenous weight enumerator: w(x)=1x^0+264x^26+382x^27+636x^28+1266x^29+1640x^30+1968x^31+3330x^32+3994x^33+4596x^34+6792x^35+6818x^36+6276x^37+7014x^38+5334x^39+3432x^40+2682x^41+1460x^42+588x^43+522x^44+42x^45+10x^48+2x^54

The gray image is a code over GF(3) with n=54, k=10 and d=26.
This code was found by Heurico 1.16 in 7.78 seconds.