The generator matrix

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

generates a code of length 76 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 143.

Homogenous weight enumerator: w(x)=1x^0+246x^143+208x^144+612x^145+1068x^146+288x^147+1476x^148+1632x^149+524x^150+2502x^151+2580x^152+548x^153+2790x^154+2298x^155+400x^156+1278x^157+678x^158+140x^159+90x^160+162x^161+36x^162+54x^164+22x^165+30x^167+2x^168+2x^171+4x^174+4x^180+6x^183+2x^189

The gray image is a code over GF(3) with n=684, k=9 and d=429.
This code was found by Heurico 1.16 in 9.25 seconds.