The generator matrix

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

generates a code of length 33 over Z2[X]/(X^2) who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+88x^30+72x^32+32x^34+25x^36+18x^38+11x^40+4x^42+3x^44+2x^46

The gray image is a linear code over GF(2) with n=66, k=8 and d=30.
As d=30 is an upper bound for linear (66,8,2)-codes, this code is optimal over Z2[X]/(X^2) for dimension 8.
This code was found by Heurico 1.16 in 0.0872 seconds.