The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  X  1  1  1  1  1  1  1  1  1  1  1
 0  X  0  0  0  0  0  X  X  X 3X  0  X  X 2X 2X 3X  0 4X  X  X 4X  0 3X 2X  X  X 4X 4X  X  0  X 2X 2X 2X  X 2X 4X 4X  0  0  X
 0  0  X  0  0  0  X 3X 3X 2X 2X 2X 4X 3X 3X 4X  X 4X 3X 4X  0 3X 3X 4X 3X 4X 2X 4X 4X  0  X 3X 3X 2X  X  0  X  X  X 3X  X 4X
 0  0  0  X  0  0 3X 4X 3X 3X 3X 4X 3X  0 3X 2X 3X  0  X  X 4X 2X 2X  X 4X  0  X 3X 3X  X  X 2X 3X 3X 2X 3X 2X  X  0 4X  X  X
 0  0  0  0  X  0 3X  0 2X 3X  X 2X  0 3X  X  X  X 4X  0  X 4X  X 4X  0 2X 2X  0  0 4X  X  X  X  X  X 4X  X 4X 3X 3X 4X 3X 2X
 0  0  0  0  0  X 3X  X 2X  0 3X 4X 4X 3X  0 4X 2X 2X 2X 2X  X 4X 3X  0 2X 4X  X 3X  X 2X 2X  0 4X 4X  0 4X 2X 2X  0  0 3X 2X

generates a code of length 42 over Z5[X]/(X^2) who´s minimum homogenous weight is 140.

Homogenous weight enumerator: w(x)=1x^0+260x^140+748x^145+1136x^150+1504x^155+4176x^160+21988x^165+42184x^170+2072x^175+1936x^180+1264x^185+592x^190+208x^195+56x^200

The gray image is a linear code over GF(5) with n=210, k=7 and d=140.
This code was found by Heurico 1.16 in 14.8 seconds.