The generator matrix

 1  1  1  1  1  1  1  1  1  1  X  1  1  X  X  1 X^2  0  X  X X^2  X  1  X  X
 0 X^2  0 X^2  0 X^2  0 X^2  0 X^2 X^2  0 X^2 X^2  0  0 X^2 X^2  0 X^2  0  0 X^2 X^2  0

generates a code of length 25 over Z2[X]/(X^3) who´s minimum homogenous weight is 26.

Homogenous weight enumerator: w(x)=1x^0+12x^26+1x^28+2x^30

The gray image is a linear code over GF(2) with n=100, k=4 and d=52.
As d=52 is an upper bound for linear (100,4,2)-codes, this code is optimal over Z2[X]/(X^3) for dimension 4.
This code was found by Heurico 1.16 in 0.00321 seconds.