sustain [Verb] + difficult [Adjective]

Strength Strength Dispersion
A:
63
CHISQ:
268.77
AWT:
2,114,387
TTEST:
6.63
G2:
126.93
FAWT:
25.71
MI:
2.61
LOGLOG:
15.57
JD:
0.86
MI3:
14.56
DICE:
0.52
RANGE: