Matched context for stroke and reciprocate

The page lists matched contexts for stroke and reciprocate.

Share - stroke	Share - reciprocate	Phrase
10.08%	12.57%	piston [does] {stroke or reciprocate}
21.58%	4.80%	{stroke or reciprocate} piston [perform operation]
8.03%	3.26%	{stroke or reciprocate} plunger [perform operation]
3.30%	0.20%	chamber {stroke or reciprocate}