The generator matrix

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

generates a code of length 12 over Z25 who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+84x^30+240x^35+420x^40+2500x^44+520x^45+10000x^49+944x^50+656x^55+260x^60

The gray image is a code over GF(5) with n=60, k=6 and d=30.
This code was found by Heurico 1.16 in 0.0786 seconds.