Matched context for adequate and difficult

The page lists matched contexts for adequate and difficult.

Share - adequate	Share - difficult	Phrase
0.29%	0.45%	{adequate or difficult} to ensure
0.26%	0.42%	{adequate or difficult} to form
0.33%	0.26%	{adequate or difficult} to keep
0.33%	0.68%	{adequate or difficult} to provide