The generator matrix

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

generates a code of length 84 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 162.

Homogenous weight enumerator: w(x)=1x^0+1440x^162+1566x^163+1422x^164+2136x^165+2004x^166+1092x^167+1898x^168+1602x^169+894x^170+1466x^171+1002x^172+540x^173+1094x^174+570x^175+216x^176+466x^177+216x^178+42x^179+6x^181+4x^183+6x^185

The gray image is a code over GF(3) with n=756, k=9 and d=486.
This code was found by Heurico 1.16 in 29.2 seconds.