Matched context for chamfer and perforation

The page lists matched contexts for chamfer and perforation.

Share - chamfer	Share - perforation	Phrase
6.11%	11.77%	have {chamfer or perforation} [perform operation]
4.79%	3.44%	form {chamfer or perforation} [perform operation]
3.20%	1.53%	{chamfer or perforation} [does] extend
3.30%	1.11%	provide {chamfer or perforation} [perform operation]
1.98%	1.42%	{chamfer or perforation} [does] form
1.44%	0.89%	{chamfer or perforation} [does] have