Matched context for obstruction and stalling

The page lists matched contexts for obstruction and stalling.

Share - obstruction	Share - stalling	Phrase
3.34%	8.76%	avoid {obstruction or stalling} [perform operation]
1.10%	16.87%	cause {obstruction or stalling} [perform operation]
0.92%	18.96%	prevent {obstruction or stalling} [perform operation]