The generator matrix

 1  0  0  1  1  1  1  1  1 2X+3  1  1  6  1  1  1  1  1 2X+6  1  1
 0  1  0 2X+3  6 2X+4  1  2 2X+2  1 2X+7  8  1 X+3  7 2X+7 X+6  1  1 2X+5  X
 0  0  1 2X+4  2 2X+2  1 X+3 2X+7 2X+4 2X  5  8 2X+3 X+8  6 X+7 X+4 2X+5  X  X

generates a code of length 21 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 37.

Homogenous weight enumerator: w(x)=1x^0+444x^37+768x^38+1408x^39+2286x^40+2628x^41+3582x^42+3624x^43+2706x^44+1394x^45+750x^46+48x^47+14x^48+24x^49+6x^50

The gray image is a code over GF(3) with n=189, k=9 and d=111.
This code was found by Heurico 1.16 in 0.173 seconds.