hardest [Adjective] + rock [Noun]

Strength Strength Dispersion
A:
5
CHISQ:
21.01
AWT:
17,285,521
TTEST:
1.87
G2:
13.42
FAWT:
3.14
MI:
2.59
LOGLOG:
6.02
JD:
0.48
MI3:
7.24
DICE:
0.1
RANGE: