Matched context for reversal and preignition

The page lists matched contexts for reversal and preignition.

Share - reversal	Share - preignition	Phrase
2.15%	27.19%	{reversal or preignition} [does] occur
1.54%	11.86%	cause {reversal or preignition} [perform operation]
2.15%	4.65%	{reversal or preignition} [does] take
1.22%	5.27%	detect {reversal or preignition} [perform operation]
0.82%	7.63%	prevent {reversal or preignition} [perform operation]