The generator matrix

 1  0  1  1  1  2  X  1  1  1 X+2  1  1  1  2  1  1  2  1  1 X+2  1  1 X+2  1  1  1  0  1 X+2  1  1  2  1  X  1  1  1  1  1  1  X  1  1  0  1  0  0  X  X  1  1  X  1  1  1  1  1  1  1  X  1  1  1
 0  1  1 X+2 X+3  1  1 X+1  X  3  1  X  X X+1  1  2 X+1  1  0  1  1  0  1  1  0 X+2 X+1  1  0  1 X+1 X+3  1 X+2  1 X+1  2  X X+2  2  0 X+2  X  3  1  1  1  0  1  1  3  3  X X+3 X+3  2  2  2  X  2  0  2 X+1  3
 0  0  X  0 X+2  X  X  2  X  2  0 X+2  0  2 X+2  X  X  0  0 X+2  0 X+2  2 X+2  0  2  0  2  2  2  0  X X+2 X+2  X X+2 X+2  X  0 X+2 X+2  2  X  2  0  X X+2  X  X  0 X+2  2  2  2  X  0  2  0  X  0  2  X  0  2
 0  0  0  2  0  2  2  2  0  2  0  0  2  0  0  2  2  2  0  2  2  2  0  0  2  0  0  2  2  0  2  0  2  0  0  2  0  2  0  2  0  2  2  2  0  0  0  2  2  2  2  0  2  0  2  2  2  2  0  0  2  0  0  2
 0  0  0  0  2  2  0  0  2  2  2  0  2  2  2  2  0  0  2  2  2  0  0  0  2  2  0  2  0  0  2  0  0  0  2  2  2  2  0  0  0  2  0  0  2  2  0  0  2  0  0  2  2  2  0  0  0  2  0  0  2  2  2  2

generates a code of length 64 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 60.

Homogenous weight enumerator: w(x)=1x^0+192x^60+80x^61+140x^62+64x^63+190x^64+64x^65+84x^66+110x^68+48x^69+20x^70+13x^72+2x^76+8x^78+3x^80+4x^82+1x^88

The gray image is a code over GF(2) with n=256, k=10 and d=120.
This code was found by Heurico 1.16 in 0.204 seconds.