The generator matrix

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

generates a code of length 84 over Z3[X]/(X^2) who´s minimum homogenous weight is 154.

Homogenous weight enumerator: w(x)=1x^0+162x^154+318x^155+300x^156+504x^157+750x^158+552x^159+936x^160+894x^161+674x^162+900x^163+1008x^164+792x^165+1206x^166+966x^167+742x^168+942x^169+984x^170+630x^171+870x^172+792x^173+570x^174+750x^175+708x^176+370x^177+516x^178+474x^179+272x^180+294x^181+252x^182+154x^183+150x^184+114x^185+26x^186+54x^187+24x^188+12x^189+6x^190+6x^191+2x^192+2x^195+4x^198

The gray image is a linear code over GF(3) with n=252, k=9 and d=154.
This code was found by Heurico 1.16 in 8.27 seconds.