The generator matrix

 1  0  1  1  1 X^2+X  1  1 X+2  1  1 X^2+2  1  1 X^2+2  1  1 X+2  1  1 X^2+X  1  1  0  1  1  1  1  2 X^2+X+2  1  1  1  1 X^2  X  1  1  1  1  1  1  1  1  2 X^2+X+2 X^2  X  1  1  1  1  1  1  1  1 X^2
 0  1 X+1 X^2+X X^2+1  1 X^2+2 X^2+X+3  1 X+2  3  1  0 X+1  1 X^2+X X^2+1  1 X^2+2 X^2+X+3  1 X+2  3  1  2 X^2+X+2 X+3 X^2+3  1  1 X^2  X X^2+X+1  1  1  1  2 X^2+X+2 X^2  X X+3 X^2+3 X^2+X+1  1  1  1  1  1  0 X^2+X X^2+2 X+2  0 X^2+X  2 X^2+X+2 X^2+2
 0  0  2  2  0  2  2  0  0  0  2  2  2  0  0  0  2  2  0  2  0  2  0  2  2  0  2  0  2  0  0  2  0  2  0  2  0  2  2  0  0  2  2  0  0  2  2  0  0  2  2  0  2  0  0  2  0

generates a code of length 57 over Z4[X]/(X^3+2,2X) who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+204x^56+128x^57+160x^58+16x^60+1x^64+2x^80

The gray image is a code over GF(2) with n=456, k=9 and d=224.
This code was found by Heurico 1.16 in 0.094 seconds.