Matched context for irregularity and difficulty

The page lists matched contexts for irregularity and difficulty.

Share - irregularity	Share - difficulty	Phrase
13.42%	10.92%	encounter {irregularity or difficulty} [perform operation]
1.34%	2.60%	eliminate {irregularity or difficulty} [perform operation]
1.29%	1.74%	cause {irregularity or difficulty} [perform operation]
1.45%	1.39%	have {irregularity or difficulty} [perform operation]
0.60%	1.05%	not {irregularity or difficulty}