Matched context for obstruction and problem

The page lists matched contexts for obstruction and problem.

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