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

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

Homogenous weight enumerator: w(x)=1x^0+132x^40+180x^41+76x^42+270x^43+312x^44+52x^45+222x^46+198x^47+70x^48+174x^49+216x^50+32x^51+162x^52+66x^53+10x^54+12x^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 1.16 in 0.03 seconds.