Matched context for self-energizing and trailing

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

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