The generator matrix

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

generates a code of length 51 over Z4[X]/(X^2+2,2X) who´s minimum homogenous weight is 43.

Homogenous weight enumerator: w(x)=1x^0+100x^43+404x^44+476x^45+812x^46+968x^47+1444x^48+1278x^49+1982x^50+1596x^51+1946x^52+1274x^53+1488x^54+904x^55+732x^56+386x^57+296x^58+136x^59+72x^60+42x^61+28x^62+8x^63+7x^64+2x^66+2x^68

The gray image is a code over GF(2) with n=204, k=14 and d=86.
This code was found by Heurico 1.16 in 74.3 seconds.