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

generates a code of length 49 over Z3[X]/(X^2) who´s minimum homogenous weight is 75.

Homogenous weight enumerator: w(x)=1x^0+188x^75+470x^78+706x^81+1000x^84+1168x^87+162x^88+1600x^90+1620x^91+1880x^93+6480x^94+2110x^96+12960x^97+2306x^99+12960x^100+2308x^102+5184x^103+2024x^105+1574x^108+1070x^111+644x^114+350x^117+184x^120+56x^123+22x^126+12x^129+8x^132+2x^135

The gray image is a linear code over GF(3) with n=147, k=10 and d=75.
This code was found by Heurico 1.16 in 91 seconds.