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  X  X  X  1  1  X  1  1  1  X  1
 0  X  0  3 2X X+6  X 2X+6 2X  3 X+6 2X+6  0 X+6  6  6  X 2X+6  0 2X  X X+6  6  3 2X+6 2X X+6 2X+6 2X  X  3  6 X+3 X+3 2X 2X+6  0 X+6 X+6  0  3 2X+3  6  X 2X+3 2X+3  6
 0  0  X 2X+6  3 2X+6  X X+6 2X+3  3 X+6 2X  3 2X 2X+3  0  6  6 X+3 X+3 X+3 X+3 X+6 X+6 X+3 2X+6  0  3 X+6 2X+6 2X 2X 2X  6  6 2X+6 2X 2X+6  0  6  0 2X+6  3  3 2X+3 X+6  X

generates a code of length 47 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 90.

Homogenous weight enumerator: w(x)=1x^0+262x^90+108x^91+162x^92+522x^93+270x^94+324x^95+288x^96+108x^97+50x^99+72x^102+18x^105+2x^126

The gray image is a code over GF(3) with n=423, k=7 and d=270.
This code was found by Heurico 1.16 in 0.0438 seconds.