The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  1  1  1
 0  1  0  1  a a^2 a^6*X+a^3 a^6*X+a^4 a^5 a^6 a^6*X a^6*X+1 X+a X+a^2
 0  0  1 a^6  a a^4  1 a^5 a^3 a^2 a^3*X+1 a*X+a^5 a^6*X a^5*X+a^2

generates a code of length 14 over F8[X]/(X^2) who´s minimum homogenous weight is 84.

Homogenous weight enumerator: w(x)=1x^0+1568x^84+3528x^85+147x^88+3136x^91+21952x^92+21168x^93+196x^96+60928x^98+21952x^99+76832x^100+50568x^101+49x^104+119x^112

The gray image is a linear code over GF(8) with n=112, k=6 and d=84.
This code was found by Heurico 1.16 in 1.74 seconds.