The generator matrix

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

generates a code of length 91 over Z9 who´s minimum homogenous weight is 171.

Homogenous weight enumerator: w(x)=1x^0+110x^171+186x^172+276x^173+458x^174+342x^175+384x^176+544x^177+294x^178+306x^179+390x^180+306x^181+258x^182+322x^183+270x^184+210x^185+238x^186+174x^187+156x^188+190x^189+180x^190+180x^191+130x^192+54x^193+96x^194+110x^195+84x^196+24x^197+104x^198+12x^199+42x^200+50x^201+30x^202+12x^203+14x^204+6x^205+12x^207+6x^211

The gray image is a code over GF(3) with n=273, k=8 and d=171.
This code was found by Heurico 1.13 in 0.485 seconds.