The generator matrix

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

generates a code of length 71 over GR(16,4) who´s minimum homogenous weight is 193.

Homogenous weight enumerator: w(x)=1x^0+264x^193+1044x^194+1056x^195+810x^196+1224x^197+3708x^198+3552x^199+2424x^200+2580x^201+7932x^202+7008x^203+3825x^204+4680x^205+11724x^206+11004x^207+6342x^208+7500x^209+17352x^210+14712x^211+8487x^212+9108x^213+20532x^214+18000x^215+8616x^216+8628x^217+18564x^218+14352x^219+6432x^220+5712x^221+11940x^222+7836x^223+3135x^224+2556x^225+4476x^226+2136x^227+714x^228+684x^229+960x^230+216x^231+105x^232+72x^233+72x^234+12x^236+24x^240+15x^244+9x^248+9x^252

The gray image is a code over GF(4) with n=284, k=9 and d=193.
This code was found by Heurico 1.16 in 874 seconds.