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

generates a code of length 30 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 28.

Homogenous weight enumerator: w(x)=1x^0+31x^28+192x^30+31x^32+1x^60

The gray image is a code over GF(2) with n=120, k=8 and d=56.
This code was found by Heurico 1.16 in 0.011 seconds.