Matched context for problem and obstruction

The page lists matched contexts for problem and obstruction.

Share - problem	Share - obstruction	Phrase
2.19%	15.17%	encounter {problem or obstruction} [perform operation]
1.29%	3.34%	avoid {problem or obstruction} [perform operation]
1.16%	3.51%	present {problem or obstruction} [perform operation]
0.83%	1.10%	cause {problem or obstruction} [perform operation]
0.24%	1.99%	minimize {problem or obstruction} [perform operation]
0.38%	1.15%	not {problem or obstruction}
0.32%	1.48%	particular [typicality] {problem or obstruction}
0.22%	0.92%	prevent {problem or obstruction} [perform operation]
0.20%	1.15%	system {problem or obstruction}