The generator matrix

 1  0  0  1  1  1  0  1  1  1  1  0  2  0  1  1  0  2  2  1  1  2  0  0  1  1  1  1  1  1  0  2  1  2  1  1  1  1  1  2  0  2  0  2  1  1  1  1  1  1  2  0  0  1  2  1  1  1  2  1  0  0  1  1  1  2  1  1  1  2  1  2  0  1  0  2  1  1  0  1  1  1  1  1  2  1  1  0  0  2  0  0  1
 0  1  0  0  1  1  1  0  0  1  3  1  1  0  2  2  0  1  1  3  3  1  0  1  2  2  3  1  0  0  1  1  2  0  3  2  0  2  1  1  2  1  0  1  3  1  3  0  1  2  1  1  0  0  2  0  0  1  1  0  1  2  1  1  3  1  0  0  3  1  2  0  1  2  0  0  3  3  1  2  1  3  1  1  2  2  3  0  0  1  0  0  3
 0  0  1  1  1  0  1  0  1  3  0  2  3  1  1  2  1  2  1  3  0  0  1  1  2  1  1  0  2  1  2  1  2  1  0  1  3  0  3  1  1  2  1  3  2  0  3  2  3  0  2  3  1  3  1  3  1  1  1  2  3  1  1  1  2  1  1  2  3  2  3  1  1  0  1  1  0  3  2  3  2  2  3  1  1  0  3  1  1  1  1  1  3
 0  0  0  2  0  0  0  0  0  2  2  0  0  0  0  2  2  2  0  0  2  0  2  2  2  2  2  0  0  2  0  0  2  2  0  2  0  2  2  2  0  0  0  0  0  0  0  2  0  0  2  0  2  2  2  2  2  2  0  2  2  2  2  2  2  2  2  0  0  2  2  2  0  2  0  2  0  0  2  2  0  0  0  0  2  0  0  0  2  2  2  0  2
 0  0  0  0  2  0  0  0  0  2  0  0  0  2  0  0  0  0  2  0  2  2  2  0  0  2  2  0  0  2  2  2  2  0  0  0  2  0  2  2  2  2  0  0  2  0  0  2  2  0  2  2  0  2  0  2  2  0  2  0  2  0  0  0  2  0  2  0  0  0  2  2  0  2  0  0  2  2  0  0  2  2  0  0  2  0  2  2  0  0  2  0  0
 0  0  0  0  0  2  0  0  0  0  2  0  0  2  0  0  0  0  2  2  0  2  2  0  0  2  0  2  0  2  0  0  0  2  0  2  0  2  2  2  2  0  0  2  2  2  2  0  2  2  0  0  2  0  2  2  2  0  0  2  2  2  0  2  0  0  2  0  0  0  2  0  0  2  2  2  0  2  2  0  0  0  0  2  2  2  0  2  0  0  0  2  0
 0  0  0  0  0  0  2  0  0  0  0  0  2  0  0  0  0  0  2  0  0  0  2  2  2  2  2  2  2  0  2  2  2  0  0  2  2  2  2  0  2  0  2  2  0  0  0  0  2  0  0  0  0  2  0  0  2  2  0  2  0  2  2  2  2  0  0  2  2  0  2  2  0  2  2  2  2  2  2  0  0  2  0  2  0  0  0  0  0  0  0  2  2
 0  0  0  0  0  0  0  2  0  0  0  2  2  2  2  2  2  0  2  0  0  2  0  0  2  0  2  2  2  2  0  2  2  2  2  2  2  0  2  0  2  0  0  0  2  0  2  2  0  2  2  2  2  0  0  0  2  2  0  0  2  2  0  2  0  2  2  0  0  0  2  2  0  0  2  2  2  0  0  2  0  0  0  0  2  0  0  2  2  0  2  0  0
 0  0  0  0  0  0  0  0  2  2  2  0  0  0  2  2  2  2  0  0  2  0  2  2  2  0  2  0  0  0  2  2  0  0  2  0  2  0  2  0  2  0  2  0  0  2  2  0  2  2  2  2  2  0  2  2  0  0  2  2  2  2  0  2  0  0  2  2  0  0  2  0  2  2  2  0  2  0  2  0  2  0  0  0  2  0  0  2  0  0  0  0  0

generates a code of length 93 over Z4 who´s minimum homogenous weight is 81.

Homogenous weight enumerator: w(x)=1x^0+46x^81+66x^82+98x^83+209x^84+178x^85+142x^86+174x^87+280x^88+230x^89+143x^90+224x^91+257x^92+226x^93+161x^94+220x^95+270x^96+176x^97+121x^98+174x^99+154x^100+98x^101+75x^102+98x^103+64x^104+58x^105+29x^106+32x^107+29x^108+10x^109+19x^110+4x^111+7x^112+2x^113+9x^114+7x^116+3x^118+2x^120

The gray image is a code over GF(2) with n=186, k=12 and d=81.
This code was found by Heurico 1.16 in 4.65 seconds.