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
 0 X^2+2  0 X^2+2  0 X^2+2  0 X^2+2  0 X^2+2  0 X^2+2  0 X^2+2  0 X^2+2  0 X^2+2  2 X^2  0 X^2+2  2 X^2  0 X^2+2  2 X^2  0 X^2+2  2 X^2  2 X^2  2 X^2  2 X^2  2 X^2  0  2 X^2+2 X^2  2  0 X^2+2 X^2  2 X^2  0  2  2 X^2+2 X^2 X^2+2  0  0
 0  0  2  0  0  0  2  0  0  0  0  0  2  0  2  0  0  2  0  2  0  2  0  2  2  2  2  2  2  2  2  2  2  0  2  0  2  0  2  0  0  0  2  2  0  2  2  0  2  2  0  0  0  2  2  2  0  0
 0  0  0  2  0  0  0  2  0  0  0  0  0  2  0  2  2  2  2  2  2  2  2  2  2  0  2  0  2  0  2  0  0  2  0  2  0  0  0  0  2  2  2  0  0  2  2  2  2  2  2  2  0  0  2  0  0  0
 0  0  0  0  2  0  2  0  0  2  2  2  2  2  0  2  2  0  0  2  2  0  0  2  0  2  0  2  2  0  2  0  0  0  2  2  0  2  2  0  0  2  2  0  2  2  2  2  2  0  0  2  2  2  0  0  0  0
 0  0  0  0  0  2  0  2  2  2  2  0  2  0  2  2  0  0  0  0  2  2  2  2  0  0  2  2  2  2  0  0  0  0  0  0  2  0  2  0  2  0  2  2  0  0  0  2  2  0  0  2  2  2  2  0  0  2

generates a code of length 58 over Z4[X]/(X^3+2,2X) who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+26x^54+47x^56+876x^58+47x^60+26x^62+1x^116

The gray image is a code over GF(2) with n=464, k=10 and d=216.
This code was found by Heurico 1.16 in 0.171 seconds.