Matched context for prolong and alter

The page lists matched contexts for prolong and alter.

Share - prolong	Share - alter	Phrase
5.96%	1.17%	{prolong or alter} duration [perform operation]
12.84%	0.40%	{prolong or alter} period [perform operation]
10.01%	0.56%	{prolong or alter} time [perform operation]
2.18%	2.33%	{prolong or alter} modal can
0.94%	2.18%	means [does] {prolong or alter}
0.86%	1.54%	{prolong or alter} modal may
0.76%	0.58%	{prolong or alter} modal will
0.46%	1.51%	not {prolong or alter}