| Share | Phrase |
|---|
| 15.17% | encounter obstruction [perform operation] |
| 9.19% | obstruction fgq |
| 6.72% | allow around obstruction |
| 6.56% | free of obstruction |
| 4.90% | bogie obstruction |
| 4.29% | obstruction coefficient |
| 4.02% | strike obstruction [perform operation] |
| 3.51% | present obstruction [perform operation] |
| 3.38% | hit obstruction [perform operation] |
| 3.34% | avoid obstruction [perform operation] |
| 3.20% | obstruction to flow |
| 3.12% | obstruction in path |
| 2.88% | contact obstruction [perform operation] |
| 2.72% | detect obstruction [perform operation] |
| 2.68% | offer obstruction [perform operation] |
| 2.39% | obstruction in pipe |
| 2.28% | distance between obstruction |
| 2.05% | path obstruction |
| 1.99% | minimize obstruction [perform operation] |
| 1.84% | road obstruction |
| 1.60% | obstruction [does] prevent |
| 1.55% | remove obstruction [perform operation] |
| 1.48% | particular [typicality] obstruction |
| 1.44% | end obstruction |
| 1.18% | provide obstruction [perform operation] |
| 1.15% | not obstruction |
| 1.15% | system obstruction |
| 1.10% | cause obstruction [perform operation] |
| 1.09% | flow obstruction |
| 0.92% | prevent obstruction [perform operation] |
| 0.58% | obstruction modal may |
| 0.38% | obstruction means |