hardest [Adjective] + rock [Noun]

Strength Strength Dispersion
A:
6
CHISQ:
83.72
AWT:
17,285,521
TTEST:
2.3
G2:
27.66
FAWT:
3.14
MI:
3.99
LOGLOG:
10.31
JD:
0.43
MI3:
9.16
DICE:
0.13
RANGE: