The generator matrix

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

generates a code of length 66 over GR(16,4) who´s minimum homogenous weight is 187.

Homogenous weight enumerator: w(x)=1x^0+1068x^187+486x^188+2196x^191+861x^192+2712x^195+852x^196+2232x^199+711x^200+1884x^203+585x^204+1380x^207+402x^208+672x^211+180x^212+144x^215+3x^216+3x^220+6x^224+6x^228

The gray image is a code over GF(4) with n=264, k=7 and d=187.
This code was found by Heurico 1.16 in 1.41 seconds.