The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  5  0  5 10 10  0  5 10 20 20 10 20  0  5 20  0  5 10 20 15
 0  0  5 15 10 15 10  5  5 15  0 20 20 20 10  5 15 20  0 10  0

generates a code of length 21 over Z25 who´s minimum homogenous weight is 80.

Homogenous weight enumerator: w(x)=1x^0+36x^80+500x^84+80x^85+4x^100+4x^105

The gray image is a code over GF(5) with n=105, k=4 and d=80.
This code was found by Heurico 1.16 in -6.87e-008 seconds.