The generator matrix

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

generates a code of length 85 over GR(81,9) who´s minimum homogenous weight is 647.

Homogenous weight enumerator: w(x)=1x^0+72x^647+688x^648+792x^652+648x^653+720x^654+1368x^655+1800x^656+1040x^657+720x^658+1368x^659+12096x^661+3384x^662+5184x^663+5688x^664+6840x^665+1120x^666+4320x^667+5616x^668+31536x^670+9288x^671+9288x^672+10368x^673+10728x^674+944x^675+18360x^676+19656x^677+84096x^679+21168x^680+21312x^681+20880x^682+20448x^683+632x^684+29088x^685+25848x^686+81432x^688+18000x^689+15984x^690+14184x^691+12600x^692+608x^693+424x^702+408x^711+272x^720+208x^729+128x^738+64x^747+24x^756

The gray image is a code over GF(9) with n=765, k=6 and d=647.
This code was found by Heurico 1.16 in 51.8 seconds.