The generator matrix

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

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+166x^159+456x^160+468x^161+796x^162+1416x^163+1044x^164+1374x^165+1356x^166+1458x^167+1746x^168+1872x^169+1854x^170+1722x^171+1572x^172+954x^173+618x^174+414x^175+54x^176+86x^177+102x^178+26x^180+90x^181+2x^183+12x^184+8x^186+2x^189+4x^192+8x^195+2x^204

The gray image is a code over GF(3) with n=756, k=9 and d=477.
This code was found by Heurico 1.16 in 1.7 seconds.