Matched context for usage and shortage

The page lists matched contexts for usage and shortage.

Share - usage	Share - shortage	Phrase
5.47%	16.30%	fuel {usage or shortage}
3.63%	9.74%	energy {usage or shortage}
0.94%	4.77%	prevent {usage or shortage} [perform operation]
0.74%	4.84%	air {usage or shortage}