The generator matrix

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

generates a code of length 21 over Z9 who´s minimum homogenous weight is 36.

Homogenous weight enumerator: w(x)=1x^0+134x^36+90x^37+156x^38+342x^39+138x^40+120x^41+292x^42+126x^43+108x^44+288x^45+108x^46+96x^47+142x^48+24x^49+6x^50+14x^51+2x^57

The gray image is a code over GF(3) with n=63, k=7 and d=36.
This code was found by Heurico 1.13 in -1.01e-007 seconds.