The generator matrix

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

generates a code of length 10 over GR(81,9) who´s minimum homogenous weight is 63.

Homogenous weight enumerator: w(x)=1x^0+960x^63+1296x^64+35712x^72+20736x^73+104976x^80+282896x^81+82944x^82+1920x^90

The gray image is a code over GF(9) with n=90, k=6 and d=63.
This code was found by Heurico 1.16 in 1.52 seconds.