tread [Verb] + difficult [Adjective]

Strength Strength Dispersion
A:
5
CHISQ:
1.69
AWT:
21,568,056
TTEST:
0.97
G2:
2.69
FAWT:
2.52
MI:
0.83
LOGLOG:
1.92
JD:
0.48
MI3:
5.47
DICE:
0.04
RANGE: