The generator matrix

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

generates a code of length 75 over GR(16,4) who´s minimum homogenous weight is 209.

Homogenous weight enumerator: w(x)=1x^0+480x^209+672x^210+528x^211+456x^212+2028x^213+2124x^214+1572x^215+879x^216+3348x^217+3276x^218+1920x^219+1314x^220+3972x^221+3672x^222+2148x^223+1230x^224+4524x^225+3876x^226+2124x^227+1293x^228+4572x^229+3672x^230+2004x^231+1191x^232+3444x^233+2628x^234+1392x^235+627x^236+1668x^237+1368x^238+516x^239+165x^240+492x^241+204x^242+84x^243+3x^244+48x^245+12x^246+6x^248+3x^252

The gray image is a code over GF(4) with n=300, k=8 and d=209.
This code was found by Heurico 1.16 in 23.6 seconds.