The generator matrix

 1  0  1  1  1  X  1  1  0  1  1  X  1  1  1  1  0  X  1  1  1  1  0  X  1  1  1  1  0  X  1  1  1  1  X  X  0  0  X  X  X  0  1  1  1  1  0  X  X  X  0  1  1  1  1  1  1
 0  1 X+1  X  1  1  0 X+1  1  X  1  1  0 X+1  X  1  1  1  0  X X+1  1  1  1  0  X X+1  1  1  1  0  X X+1  1  0  X  X  1  1  0  X  X  0  X X+1  1  1  1  0  X  X  0  X X+1  1  0  X

generates a code of length 57 over Z2[X]/(X^2) who´s minimum homogenous weight is 60.

Homogenous weight enumerator: w(x)=1x^0+13x^60+1x^64+1x^68

The gray image is a linear code over GF(2) with n=114, k=4 and d=60.
As d=60 is an upper bound for linear (114,4,2)-codes, this code is optimal over Z2[X]/(X^2) for dimension 4.
This code was found by Heurico 1.16 in 0.0346 seconds.