The generator matrix

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

generates a code of length 89 over Z8 who´s minimum homogenous weight is 77.

Homogenous weight enumerator: w(x)=1x^0+24x^77+162x^78+238x^79+548x^80+858x^81+1050x^82+1168x^83+1626x^84+2222x^85+2206x^86+2234x^87+2595x^88+3044x^89+2732x^90+2172x^91+2285x^92+2236x^93+1522x^94+1058x^95+894x^96+730x^97+430x^98+264x^99+205x^100+94x^101+70x^102+22x^103+25x^104+8x^105+12x^106+12x^107+11x^108+8x^110+1x^112+1x^116

The gray image is a code over GF(2) with n=356, k=15 and d=154.
This code was found by Heurico 1.16 in 73.8 seconds.