The generator matrix

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

generates a code of length 30 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 24.

Homogenous weight enumerator: w(x)=1x^0+155x^24+122x^26+64x^27+311x^28+192x^29+338x^30+192x^31+331x^32+64x^33+174x^34+80x^36+6x^38+17x^40+1x^44

The gray image is a code over GF(2) with n=120, k=11 and d=48.
This code was found by Heurico 1.16 in 42.3 seconds.