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

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

Homogenous weight enumerator: w(x)=1x^0+34x^73+7x^74+12x^75+7x^76+2x^77+1x^86

The gray image is a code over GF(2) with n=292, k=6 and d=146.
This code was found by Heurico 1.16 in 0.236 seconds.