Matched context for entry and backflow

The page lists matched contexts for entry and backflow.

Share - entry	Share - backflow	Phrase
3.45%	22.00%	prevent {entry or backflow} [perform operation]
7.32%	1.92%	{entry or backflow} port
1.32%	6.36%	fuel {entry or backflow}
0.73%	4.28%	gas {entry or backflow}
1.92%	1.08%	air {entry or backflow}
0.79%	3.20%	fluid {entry or backflow}
1.83%	1.33%	water {entry or backflow}
1.16%	0.93%	allow {entry or backflow} [perform operation]
0.58%	2.60%	block {entry or backflow} [perform operation]
0.50%	2.83%	restrict {entry or backflow} [perform operation]
0.25%	1.91%	{entry or backflow} conduit
0.14%	0.85%	{entry or backflow} means