The generator matrix

 1  0  1  1  1  1  1 X+6  1  1 2X  1  1  1  1  1  1  1  0  1  1
 0  1 2X+7  8 X+6 X+1 X+5  1 2X+8 2X  1  7  0 2X+7  8 X+6 X+5 2X+8  1  8 X+6
 0  0  6  0  0  0  6  6  3  3  6  6  6  3  3  3  6  6  3  6  6
 0  0  0  3  0  3  6  3  3  6  0  3  6  6  3  6  0  6  6  0  6
 0  0  0  0  6  6  3  0  3  6  6  3  6  0  6  3  3  0  6  6  6

generates a code of length 21 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 34.

Homogenous weight enumerator: w(x)=1x^0+36x^34+242x^36+168x^37+810x^38+770x^39+2820x^40+3240x^41+1514x^42+5400x^43+3240x^44+1034x^45+300x^46+50x^48+24x^49+14x^51+10x^54+8x^57+2x^60

The gray image is a code over GF(3) with n=189, k=9 and d=102.
This code was found by Heurico 1.16 in 35 seconds.