Matched context for concern and difficulty

The page lists matched contexts for concern and difficulty.

Share - concern	Share - difficulty	Phrase
2.43%	5.48%	{concern or difficulty} [does] arise
1.41%	2.60%	eliminate {concern or difficulty} [perform operation]
4.78%	0.74%	major [importance] {concern or difficulty}
5.96%	0.65%	particular [typicality] {concern or difficulty}
2.02%	1.18%	associate {concern or difficulty} [perform operation]
1.60%	0.23%	additional [importance] {concern or difficulty}
1.34%	0.65%	create {concern or difficulty} [perform operation]
0.57%	1.39%	have {concern or difficulty} [perform operation]
0.82%	1.05%	not {concern or difficulty}
1.30%	0.52%	reduce {concern or difficulty} [perform operation]