Matched context for exhaustion and backflow

The page lists matched contexts for exhaustion and backflow.

Share - exhaustion	Share - backflow	Phrase
3.43%	22.00%	prevent {exhaustion or backflow} [perform operation]
4.79%	4.28%	gas {exhaustion or backflow}
4.90%	3.20%	fluid {exhaustion or backflow}
2.70%	1.08%	air {exhaustion or backflow}
2.48%	0.75%	cause {exhaustion or backflow} [perform operation]