Matched context for difficult and insufficient

The page lists matched contexts for difficult and insufficient.

Share - difficult	Share - insufficient	Phrase
1.44%	0.99%	{difficult or insufficient} to maintain
0.21%	0.45%	{difficult or insufficient} to effect
0.26%	0.83%	{difficult or insufficient} to keep
0.15%	0.64%	{difficult or insufficient} to meet
0.18%	0.56%	{difficult or insufficient} to move
0.17%	0.76%	{difficult or insufficient} to prevent
0.24%	0.47%	{difficult or insufficient} to produce
0.68%	0.86%	{difficult or insufficient} to provide
0.77%	0.49%	often {difficult or insufficient}