Matched context for therepast and back-flow

The page lists matched contexts for therepast and back-flow.

Share - therepast	Share - back-flow	Phrase
5.73%	27.51%	prevent {therepast or back-flow} [perform operation]
7.56%	7.24%	oil {therepast or back-flow}
3.40%	6.55%	fuel {therepast or back-flow}