The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  3  1  1  1  1  3  1  1  3  1  1  1  1  1  3  1  1  3  1  1  3  3  1  1  3  1
 0  3  0  0  0  0  0  0  0  0  3  6  6  3  3  3  0  6  3  6  3  0  3  0  6  3  0  6  3  6  6  6  3  3  3  0  6  6  0  0  0  3  6  3  0  3  6  6  3  6  6  6  3  6  3  3  0  6  3  3  6  0  3  0  3  6  0  0  6  3  3  0  3  3  3  0  6  0  3  0  6  0  6  0
 0  0  3  0  0  0  0  3  6  6  6  0  0  6  3  6  3  0  3  3  0  6  6  0  3  3  6  0  3  0  6  6  6  3  6  0  6  6  3  6  3  6  6  6  0  6  0  6  0  3  0  6  0  3  6  0  3  3  0  3  3  6  3  0  3  0  3  3  6  0  6  3  6  0  3  0  6  6  6  3  6  3  3  3
 0  0  0  3  0  0  3  6  0  6  0  0  6  3  3  6  0  3  0  6  0  6  6  0  6  0  3  6  6  3  3  3  6  0  0  6  6  3  6  3  0  6  6  3  3  3  6  6  6  0  3  6  0  3  3  0  0  3  3  3  3  3  6  3  3  3  6  6  3  3  6  3  6  0  3  3  6  3  0  0  3  3  6  0
 0  0  0  0  3  0  6  6  3  0  6  6  6  0  6  6  0  6  3  0  6  6  0  3  6  0  6  3  0  3  0  3  0  6  0  6  0  6  3  0  6  3  6  3  6  6  0  6  0  3  3  0  3  3  3  3  0  3  6  0  6  3  0  0  3  0  6  3  6  6  6  0  6  6  0  3  3  0  3  6  3  3  3  3
 0  0  0  0  0  3  6  6  6  6  6  6  3  6  3  3  6  3  6  6  6  6  0  6  0  3  0  0  6  3  6  0  6  3  0  3  3  0  3  0  0  3  6  3  3  3  3  0  3  3  6  6  3  3  0  6  3  0  6  6  3  6  3  3  3  3  3  0  3  6  0  6  3  3  0  3  6  6  0  0  6  3  3  0

generates a code of length 84 over Z9 who´s minimum homogenous weight is 156.

Homogenous weight enumerator: w(x)=1x^0+98x^156+36x^158+140x^159+102x^161+40x^162+210x^164+114x^165+444x^167+106x^168+384x^170+18x^171+222x^173+58x^174+60x^176+38x^177+14x^180+34x^183+24x^186+6x^189+8x^192+10x^195+2x^198+8x^201+6x^204+2x^210+2x^228

The gray image is a code over GF(3) with n=252, k=7 and d=156.
This code was found by Heurico 1.16 in 0.601 seconds.