Matched context for obstruct and block off

The page lists matched contexts for obstruct and block off.

Share - obstruct	Share - block off	Phrase
12.58%	3.72%	{obstruct or block off} flow [perform operation]
11.15%	3.40%	{obstruct or block off} communication [perform operation]
4.02%	4.06%	valve [does] {obstruct or block off}
1.87%	6.15%	{obstruct or block off} port [perform operation]
3.55%	2.12%	{obstruct or block off} opening [perform operation]
2.70%	2.60%	{obstruct or block off} passage [perform operation]
2.34%	2.19%	position [does] {obstruct or block off}
1.25%	1.87%	member [does] {obstruct or block off}
0.96%	1.80%	{obstruct or block off} end [perform operation]
0.98%	1.15%	means [does] {obstruct or block off}
0.43%	2.24%	{obstruct or block off} modal can