Matched context for barb and perforation

The page lists matched contexts for barb and perforation.

Share - barb	Share - perforation	Phrase
2.68%	11.77%	have {barb or perforation} [perform operation]
4.03%	4.70%	{barb or perforation} plurality
3.28%	3.44%	form {barb or perforation} [perform operation]
3.52%	1.53%	{barb or perforation} [does] extend
2.92%	1.84%	include {barb or perforation} [perform operation]