The generator matrix

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

generates a code of length 84 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 159.

Homogenous weight enumerator: w(x)=1x^0+526x^159+786x^160+1758x^161+2984x^162+3288x^163+4020x^164+5248x^165+3840x^166+5580x^167+5088x^168+4098x^169+4416x^170+4796x^171+3258x^172+2964x^173+2590x^174+1452x^175+984x^176+722x^177+252x^178+174x^179+122x^180+6x^181+12x^182+14x^183+18x^184+6x^185+6x^186+12x^187+6x^188+14x^189+6x^191+2x^192

The gray image is a code over GF(3) with n=756, k=10 and d=477.
This code was found by Heurico 1.16 in 9.82 seconds.