The generator matrix

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

generates a code of length 73 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 70.

Homogenous weight enumerator: w(x)=1x^0+147x^70+129x^72+120x^74+66x^76+35x^78+10x^80+2x^90+2x^96

The gray image is a code over GF(2) with n=292, k=9 and d=140.
This code was found by Heurico 1.16 in 0.932 seconds.