The generator matrix

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

generates a code of length 84 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 80.

Homogenous weight enumerator: w(x)=1x^0+236x^80+208x^82+188x^84+208x^86+156x^88+4x^92+17x^96+1x^104+4x^112+1x^120

The gray image is a code over GF(2) with n=336, k=10 and d=160.
This code was found by Heurico 1.16 in 0.424 seconds.