Matched context for pull back and urge back

The page lists matched contexts for pull back and urge back.

Share - pull back	Share - urge back	Phrase
19.29%	38.78%	spring [does] {pull back or urge back}
19.15%	35.38%	{pull back or urge back} piston [perform operation]
20.96%	16.38%	position [location] {pull back or urge back}