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

generates a code of length 72 over Z4[X]/(X^2+2X+2) who´s minimum homogenous weight is 68.

Homogenous weight enumerator: w(x)=1x^0+24x^68+80x^70+814x^72+80x^74+23x^76+1x^80+1x^140

The gray image is a code over GF(2) with n=576, k=10 and d=272.
This code was found by Heurico 1.16 in 0.39 seconds.