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

generates a code of length 74 over GR(16,4) who´s minimum homogenous weight is 211.

Homogenous weight enumerator: w(x)=1x^0+1128x^211+507x^212+2508x^215+828x^216+2568x^219+864x^220+2040x^223+816x^224+1644x^227+459x^228+1212x^231+339x^232+960x^235+234x^236+192x^239+42x^240+36x^243+3x^248+3x^256

The gray image is a code over GF(4) with n=296, k=7 and d=211.
This code was found by Heurico 1.16 in 18 seconds.