The generator matrix

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

generates a code of length 23 over Z2[X]/(X^4) who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+300x^20+128x^21+464x^22+256x^23+548x^24+128x^25+144x^26+76x^28+3x^32

The gray image is a linear code over GF(2) with n=184, k=11 and d=80.
This code was found by Heurico 1.16 in 12.7 seconds.