Matched context for unblock and block off

The page lists matched contexts for unblock and block off.

Share - unblock	Share - block off	Phrase
13.84%	6.15%	{unblock or block off} port [perform operation]
16.55%	2.12%	{unblock or block off} opening [perform operation]
5.48%	2.60%	{unblock or block off} passage [perform operation]
3.39%	4.06%	valve [does] {unblock or block off}
3.81%	1.87%	member [does] {unblock or block off}
4.53%	1.15%	means [does] {unblock or block off}