Matched context for prechamber and keyhole

The page lists matched contexts for prechamber and keyhole.

Share - prechamber	Share - keyhole	Phrase
8.46%	21.54%	ignition {prechamber or keyhole}
0.86%	5.86%	{prechamber or keyhole} opening
1.18%	3.86%	have {prechamber or keyhole} [perform operation]
0.80%	2.20%	cylinder {prechamber or keyhole}