Matched context for trailing and self-energizing

The page lists matched contexts for trailing and self-energizing.

Share - trailing	Share - self-energizing	Phrase
14.17%	43.56%	{trailing or self-energizing} ramp
6.27%	6.83%	{trailing or self-energizing} shoe
1.01%	4.42%	{trailing or self-energizing} brake