The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+412x^171+1002x^174+1106x^177+980x^180+888x^183+642x^186+532x^189+416x^192+280x^195+208x^198+68x^201+22x^204+2x^210+2x^222

The gray image is a code over GF(3) with n=273, k=8 and d=171.
This code was found by Heurico 1.16 in 1.04 seconds.