The generator matrix

 1  0  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1 2a^2+3  a 3a^2+2 2a^2+3a+1 a^2+3a a^2+3a+3 3a^2+2a+3  2 2a^2+2a+3 a+2 3a^2+2a+2 2a^2+3a+3 a^2+a

generates a code of length 15 over GR(64,4) who´s minimum homogenous weight is 98.

Homogenous weight enumerator: w(x)=1x^0+168x^98+672x^99+42x^104+1176x^106+2016x^107+21x^112

The gray image is a code over GF(8) with n=120, k=4 and d=98.
This code was found by Heurico 1.16 in 0.00105 seconds.