Appox. usage (any sense): 3.13 per million words
Appox. usage (any sense): 1.05 per million words
Appox. usage (any sense): 5.94 per million words
Appox. usage (any sense): 0.129 per million words
Appox. usage (any sense): 1.52 per million words
Appox. usage (any sense): 5.24 per million words
Usage unknown
Appox. usage (any sense): 0.027 per million words