The generator matrix

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

generates a code of length 23 over Z9 who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+132x^40+186x^41+76x^42+276x^43+288x^44+52x^45+198x^46+234x^47+70x^48+210x^49+192x^50+32x^51+138x^52+72x^53+10x^54+18x^55+2x^57

The gray image is a code over GF(3) with n=69, k=7 and d=40.
This code was found by Heurico 1.13 in 0.032 seconds.