The generator matrix

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

generates a code of length 73 over GR(16,4) who´s minimum homogenous weight is 208.

Homogenous weight enumerator: w(x)=1x^0+1485x^208+3264x^212+3285x^216+2892x^220+2445x^224+1704x^228+936x^232+300x^236+69x^240+3x^248

The gray image is a code over GF(4) with n=292, k=7 and d=208.
This code was found by Heurico 1.16 in 16.3 seconds.