| Share | Phrase |
|---|
| 20.99% | establish [location] block off |
| 8.34% | block off connection [perform operation] |
| 6.64% | block off from pressure |
| 6.15% | block off port [perform operation] |
| 4.30% | block off chamber [perform operation] |
| 4.29% | land [does] block off |
| 4.06% | valve [does] block off |
| 3.92% | block off brake [perform operation] |
| 3.72% | block off flow [perform operation] |
| 3.40% | block off communication [perform operation] |
| 3.29% | block off hole [perform operation] |
| 3.29% | block off cylinder [perform operation] |
| 3.28% | line [location] block off |
| 2.68% | block off pressure [perform operation] |
| 2.60% | block off passage [perform operation] |
| 2.59% | simultaneously [temporal] block off |
| 2.24% | block off modal can |
| 2.19% | block off circuit [perform operation] |
| 2.19% | position [does] block off |
| 2.12% | block off opening [perform operation] |
| 1.87% | member [does] block off |
| 1.80% | block off end [perform operation] |
| 1.59% | respect [reference] block off |
| 1.20% | so [resume] block off |
| 1.15% | means [does] block off |