The generator matrix

 1  0  1  1  1  1  1  0  X  1  1  1  1  1  0  1 2X  1  1  1  1  1  1  1  1  1  0  1  1 2X  1  1  1  0  X  1  1  1  1  1  1  X  1  X 2X  1  1  1  1  1  1  0  1  1  1 2X  1  0  X  0  1  1  1 2X  1  1  1  1  1  1  1  1  0
 0  1  1  2  0 2X+1  2  1  1  X 2X+1  2 2X+1  0  1 2X  1 2X+1 X+2 X+1  2 X+2 X+2 X+1  0  2  1 X+1 2X+2  1 2X+1 2X 2X  1  1  2  0 X+2  1  X 2X  1 2X+1  1  1 X+1 2X+1 2X+1 X+1 X+1 2X+2  1  1 X+1 X+2  1 X+2  1  1  1  2  1  2  1 X+2 X+1  0 X+2  1  0 X+1 2X+2  1
 0  0 2X  0  0 2X  0  X 2X  0  X  0  X  X  0 2X  0 2X  0 2X  X 2X  X 2X  X 2X  X  0  X 2X  X  0 2X  X  0 2X  0  0  X  0  X 2X  0  0 2X  X 2X 2X  0  X 2X  0  0  0 2X  X 2X 2X 2X  X  X  0  X  X  0 2X 2X 2X  X  X  0  0  X
 0  0  0  X  0 2X 2X 2X  X  0  0 2X  X 2X  0  X  0 2X  X  0 2X  X 2X  0  0  X  0 2X  X  0  0  X  0  X  X 2X 2X  0  X  X 2X  0  0 2X 2X  0  X  X 2X 2X  0 2X  X  0 2X  0 2X  X  X  X  X 2X  X  X  0 2X  0  0 2X  X  X  X 2X
 0  0  0  0  X  X  X  0  0 2X 2X 2X  0 2X  X  X 2X 2X  X 2X  0  X 2X  X 2X  0 2X 2X  0 2X  0  X  0 2X 2X  0  X 2X 2X 2X  X  0  0  0  X  X  0  X  X  0  0  X  0 2X  X  X 2X  X 2X  0  X  0 2X  X  X 2X 2X 2X  X  X 2X  0 2X

generates a code of length 73 over Z3[X]/(X^2) who´s minimum homogenous weight is 138.

Homogenous weight enumerator: w(x)=1x^0+286x^138+488x^141+462x^144+188x^147+316x^150+194x^153+150x^156+74x^159+16x^162+6x^165+4x^168+2x^180

The gray image is a linear code over GF(3) with n=219, k=7 and d=138.
This code was found by Heurico 1.16 in 0.137 seconds.