insurmountable [Adjective] + difficulty [Noun]

Strength Strength Dispersion
A:
16
CHISQ:
1,944.79
AWT:
6,104,182
TTEST:
3.97
G2:
134.22
FAWT:
8.91
MI:
6.95
LOGLOG:
27.79
JD:
0.72
MI3:
14.95
DICE:
0.24
RANGE: