Matched context for rout and pre-heating

The page lists matched contexts for rout and pre-heating.

Share - rout	Share - pre-heating	Phrase
5.71%	25.94%	{rout or pre-heating} air [perform operation]
3.66%	40.29%	{rout or pre-heating} fuel [perform operation]
2.78%	33.75%	provide for {rout or pre-heating}