The generator matrix

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

generates a code of length 28 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 51.

Homogenous weight enumerator: w(x)=1x^0+818x^51+822x^52+1338x^53+3412x^54+1686x^55+2208x^56+4434x^57+1734x^58+1302x^59+1606x^60+282x^61+16x^63+12x^64+12x^65

The gray image is a code over GF(3) with n=252, k=9 and d=153.
This code was found by Heurico 1.16 in 0.318 seconds.