Matched context for boil and drain back

The page lists matched contexts for boil and drain back.

Share - boil	Share - drain back	Phrase
4.34%	22.43%	oil [does] {boil or drain back}
3.38%	4.66%	fuel [does] {boil or drain back}
1.08%	7.46%	{boil or drain back} fuel [perform operation]
0.81%	4.42%	{boil or drain back} modal will