Matched context for prevent back and prevent back

The page lists matched contexts for prevent back and prevent back.

Share - prevent back	Share - prevent back	Phrase
22.16%	22.16%	{prevent back or prevent back} flow [perform operation]
18.79%	18.79%	bp [location] {prevent back or prevent back}
16.84%	16.84%	valve [does] {prevent back or prevent back}
10.28%	10.28%	crankcase [location] {prevent back or prevent back}
9.09%	9.09%	{prevent back or prevent back} drive [perform operation]
7.78%	7.78%	{prevent back or prevent back} fuel [perform operation]
5.67%	5.67%	method [does] {prevent back or prevent back}
4.86%	4.86%	substantially [degree] {prevent back or prevent back}
4.47%	4.47%	chamber [location] {prevent back or prevent back}