The generator matrix

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

generates a code of length 51 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 91.

Homogenous weight enumerator: w(x)=1x^0+372x^91+918x^92+2758x^93+6030x^94+9474x^95+14180x^96+20658x^97+25332x^98+38112x^99+49110x^100+53496x^101+64834x^102+65106x^103+54036x^104+49286x^105+36462x^106+20556x^107+11654x^108+5694x^109+2334x^110+622x^111+198x^112+48x^113+56x^114+66x^115+12x^116+12x^117+12x^118+6x^119+6x^120

The gray image is a code over GF(3) with n=459, k=12 and d=273.
This code was found by Heurico 1.16 in 410 seconds.