The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  1  1  2  1  2  1  1  1  1  2  1  1  2  1  1  1  2  2  1  1  1  1  2  2
 0  2  0  0  0  0  0  0  0  0  0  2  0  0  2  2  0  0  0  0  2  2  2  2  0  0  0  2  2  2  2  0  2  2  2  0  0  2  0  0  2  2  0  2  0  2  0  0  0
 0  0  2  0  0  0  0  0  0  0  0  2  2  2  2  2  0  0  0  2  2  0  0  0  2  2  0  0  2  2  2  2  0  2  0  2  0  0  2  0  0  0  2  0  0  2  0  0  2
 0  0  0  2  0  0  0  0  0  0  2  0  2  2  0  2  2  0  2  0  2  2  2  2  2  2  0  0  2  2  0  0  0  0  0  0  2  2  0  0  2  2  0  2  2  0  2  0  0
 0  0  0  0  2  0  0  0  0  0  2  0  0  2  2  2  2  2  0  2  0  0  0  0  0  0  2  2  2  0  2  0  2  0  0  0  2  2  0  0  2  0  0  2  2  2  0  2  0
 0  0  0  0  0  2  0  0  0  2  0  0  0  2  2  0  2  0  2  2  2  0  0  2  2  0  0  2  2  2  0  2  0  2  2  0  2  2  2  2  2  2  2  0  0  0  0  0  2
 0  0  0  0  0  0  2  0  0  2  0  0  2  0  0  2  2  2  0  2  2  0  2  2  0  2  2  2  2  0  0  0  0  2  0  2  2  0  2  0  0  0  0  0  2  0  2  2  2
 0  0  0  0  0  0  0  2  0  2  2  2  2  0  0  0  0  0  2  2  2  2  2  0  2  2  2  0  0  0  0  0  0  0  2  2  2  0  0  0  2  0  2  2  0  2  0  2  2
 0  0  0  0  0  0  0  0  2  2  2  2  0  0  2  2  2  0  0  0  2  0  0  0  2  2  0  0  2  0  0  0  2  0  0  2  2  2  2  2  0  2  2  2  0  2  2  2  2

generates a code of length 49 over Z4 who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+76x^40+10x^42+162x^44+80x^46+217x^48+132x^50+180x^52+32x^54+84x^56+2x^58+26x^60+21x^64+1x^80

The gray image is a code over GF(2) with n=98, k=10 and d=40.
This code was found by Heurico 1.16 in 0.178 seconds.