The generator matrix

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

generates a code of length 28 over GR(81,9) who´s minimum homogenous weight is 198.

Homogenous weight enumerator: w(x)=1x^0+520x^198+432x^200+288x^201+1088x^207+1944x^208+10368x^209+3024x^210+1032x^216+31104x^217+82944x^218+16416x^219+1304x^225+124416x^226+221184x^227+32760x^228+1456x^234+872x^243+288x^252

The gray image is a code over GF(9) with n=252, k=6 and d=198.
This code was found by Heurico 1.16 in 13.5 seconds.