Matched context for complication and difficulty

The page lists matched contexts for complication and difficulty.

Share - complication	Share - difficulty	Phrase
28.27%	5.48%	{complication or difficulty} [does] arise
10.44%	2.29%	avoid {complication or difficulty} [perform operation]
3.82%	1.74%	cause {complication or difficulty} [perform operation]
12.00%	0.23%	additional [importance] {complication or difficulty}
7.33%	0.15%	system {complication or difficulty}
4.10%	0.21%	prevent {complication or difficulty} [perform operation]