The generator matrix

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

generates a code of length 71 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 136.

Homogenous weight enumerator: w(x)=1x^0+1074x^136+1086x^137+1748x^138+2694x^139+1464x^140+1094x^141+2556x^142+1110x^143+1472x^144+1764x^145+834x^146+778x^147+864x^148+474x^149+170x^150+432x^151+42x^152+6x^154+6x^155+6x^157+6x^158+2x^159

The gray image is a code over GF(3) with n=639, k=9 and d=408.
This code was found by Heurico 1.16 in 0.803 seconds.