The generator matrix

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

generates a code of length 31 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 59.

Homogenous weight enumerator: w(x)=1x^0+432x^59+350x^60+432x^62+482x^63+432x^65+48x^66+4x^69+6x^72

The gray image is a code over GF(3) with n=279, k=7 and d=177.
This code was found by Heurico 1.16 in 89.3 seconds.