Matched context for block off and choke

The page lists matched contexts for block off and choke.

Share - block off	Share - choke	Phrase
6.15%	38.27%	{block off or choke} port [perform operation]
3.72%	25.74%	{block off or choke} flow [perform operation]
2.60%	35.98%	{block off or choke} passage [perform operation]