The generator matrix

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

generates a code of length 42 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+41x^40+50x^41+83x^42+44x^43+21x^44+2x^45+11x^46+1x^48+1x^54+1x^62

The gray image is a code over GF(2) with n=168, k=8 and d=80.
This code was found by Heurico 1.16 in 0.0238 seconds.