Matched context for degradation and shortage

The page lists matched contexts for degradation and shortage.

Share - degradation	Share - shortage	Phrase
1.95%	18.47%	oil {degradation or shortage}
1.93%	7.56%	detect {degradation or shortage} [perform operation]
3.02%	4.77%	prevent {degradation or shortage} [perform operation]
1.55%	5.94%	cause {degradation or shortage} [perform operation]
0.17%	8.73%	{degradation or shortage} signal
0.26%	6.22%	{degradation or shortage} [does] occur