Matched context for contamination and stagnation

The page lists matched contexts for contamination and stagnation.

Share - contamination	Share - stagnation	Phrase
7.99%	16.99%	prevent {contamination or stagnation} [perform operation]
2.58%	48.32%	coolant {contamination or stagnation}
1.70%	5.92%	fuel {contamination or stagnation}