The generator matrix

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

generates a code of length 87 over GR(81,9) who´s minimum homogenous weight is 657.

Homogenous weight enumerator: w(x)=1x^0+136x^657+144x^661+816x^666+432x^668+864x^669+3456x^670+1584x^671+3920x^675+6048x^677+7560x^678+13968x^679+4680x^680+11952x^684+15552x^686+18792x^687+28584x^688+12096x^689+40400x^693+42336x^695+41256x^696+61344x^697+19584x^698+52296x^702+40608x^704+36504x^705+49968x^706+14544x^707+624x^711+440x^720+376x^729+184x^738+168x^747+120x^756+40x^765+56x^774+8x^783

The gray image is a code over GF(9) with n=783, k=6 and d=657.
This code was found by Heurico 1.16 in 54.1 seconds.