insuperable [Adjective] + barrier [Noun]

Strength Strength Dispersion
A:
4
CHISQ:
729.14
AWT:
35,125,920
TTEST:
1.99
G2:
44.5
FAWT:
1.55
MI:
7.53
LOGLOG:
15.05
JD:
0.51
MI3:
11.53
DICE:
0.26
RANGE: