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

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

Homogenous weight enumerator: w(x)=1x^0+900x^187+504x^188+2544x^191+813x^192+2556x^195+876x^196+2112x^199+807x^200+2100x^203+456x^204+1224x^207+405x^208+684x^211+219x^212+168x^215+6x^220+3x^224+3x^228+3x^232

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 1.03 seconds.