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

generates a code of length 33 over Z3[X]/(X^2) who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+44x^54+88x^57+112x^60+162x^62+108x^63+648x^65+88x^66+648x^68+60x^69+78x^72+78x^75+42x^78+12x^81+14x^84+2x^87+2x^93

The gray image is a linear code over GF(3) with n=99, k=7 and d=54.
This code was found by Heurico 1.16 in 0.0599 seconds.