The generator matrix

 1  0  1  1  1  1  1  0  1  1  1  0  1  1  1  0  3  1  1  1  1  1  0  1  1  0  1  1  1  3  1  1  1  0  1  1  1  1  0  1  1  6  1  1  1  1  3  1  6  6  1  1  1  1  1  1  1  1  3  6  1  1  1  0  1  1  1  1  1  1  1  1  1  1  6  1  1  1  1  1  1  1  1  1
 0  1  1  8  0  1  8  1  0  7  8  1  0  8  7  1  1  7  8  3  8  0  1  7  0  1  7  8  7  1  8  2  0  1  7  6  2  7  1  0  2  1  5  1  2  3  1  7  1  1  2  2  0  0  5  7  3  5  1  1  4  5  6  1  3  4  4  1  8  8  8  6  5  7  1  1  3  5  3  4  8  4  0  7
 0  0  6  0  0  0  0  0  0  6  3  0  3  3  6  3  3  3  3  6  0  3  0  3  3  0  0  0  0  6  3  3  0  6  0  3  3  6  3  6  3  3  0  6  6  3  3  6  6  3  3  6  3  6  6  3  0  6  3  6  0  3  6  0  6  6  0  0  3  3  6  3  6  0  6  3  0  0  0  0  0  0  3  6
 0  0  0  3  0  0  0  0  0  0  0  0  0  0  6  6  6  3  3  0  3  3  6  0  3  6  0  6  6  6  0  0  3  6  3  6  6  0  3  0  3  3  3  6  6  0  3  0  0  6  6  3  6  6  0  0  6  6  3  6  6  3  0  0  0  3  6  3  6  6  3  3  6  6  3  6  0  3  3  0  0  0  0  0
 0  0  0  0  3  0  0  0  0  0  0  0  0  0  0  0  0  0  0  3  0  6  3  6  6  6  6  6  3  3  3  3  0  6  3  6  3  3  6  3  6  3  3  3  6  3  3  3  0  6  6  0  3  0  6  6  3  6  0  0  0  3  3  6  0  6  6  0  0  3  3  0  6  3  0  0  6  3  3  6  6  6  6  6
 0  0  0  0  0  6  0  0  0  0  0  6  0  3  0  0  6  3  6  0  6  0  6  6  0  3  6  6  6  3  6  0  3  0  3  0  0  0  6  6  0  3  6  3  0  6  3  3  3  0  6  3  3  6  3  6  6  0  6  3  6  3  6  6  3  3  6  0  3  6  6  6  3  0  0  3  6  0  6  6  3  0  0  3
 0  0  0  0  0  0  3  0  6  6  3  0  0  6  6  6  6  0  6  3  3  6  3  3  0  6  3  6  0  6  3  0  3  6  6  0  6  0  0  0  6  0  0  0  6  0  6  3  0  0  3  6  3  0  6  0  6  0  0  6  0  0  3  3  3  3  3  0  0  6  6  0  3  3  0  6  3  3  6  6  6  6  3  3
 0  0  0  0  0  0  0  3  3  6  0  3  6  3  3  3  0  3  3  0  6  3  0  6  3  6  3  3  6  0  3  3  3  6  6  0  0  3  0  3  6  6  0  3  0  0  0  3  3  3  3  0  0  3  6  0  3  0  0  3  3  3  6  6  0  6  6  3  3  6  3  3  6  6  3  0  0  6  6  6  6  3  6  0

generates a code of length 84 over Z9 who´s minimum homogenous weight is 144.

Homogenous weight enumerator: w(x)=1x^0+82x^144+278x^147+18x^148+6x^149+502x^150+114x^151+138x^152+830x^153+312x^154+426x^155+1478x^156+624x^157+690x^158+2342x^159+1176x^160+1236x^161+3332x^162+1662x^163+1944x^164+4558x^165+2094x^166+2436x^167+5268x^168+2274x^169+2262x^170+5254x^171+2058x^172+1980x^173+3764x^174+1536x^175+1206x^176+2474x^177+810x^178+576x^179+1216x^180+342x^181+186x^182+642x^183+102x^184+36x^185+340x^186+180x^189+116x^192+78x^195+34x^198+14x^201+12x^204+6x^207+4x^210

The gray image is a code over GF(3) with n=252, k=10 and d=144.
This code was found by Heurico 1.16 in 78.7 seconds.