Matched context for necessitate and perceive

The page lists matched contexts for necessitate and perceive.

Share - necessitate	Share - perceive	Phrase
3.42%	13.05%	{necessitate or perceive} modification [perform operation]
3.19%	9.88%	{necessitate or perceive} change [perform operation]
0.89%	5.46%	{necessitate or perceive} modal will
1.52%	1.01%	{necessitate or perceive} modal may
1.63%	0.52%	not {necessitate or perceive}