| Share | Phrase |
|---|
| 13.91% | border chamber [perform operation] |
| 12.34% | border leg [perform operation] |
| 10.51% | wall [does] border |
| 8.83% | cap [does] border |
| 7.66% | leg [does] border |
| 7.14% | surface [does] border |
| 6.98% | edge [does] border |
| 6.43% | border opening [perform operation] |
| 5.54% | piston [does] border |
| 5.11% | area [does] border |
| 4.59% | border passage [perform operation] |
| 4.11% | border side [perform operation] |
| 3.94% | border bore [perform operation] |
| 2.86% | border portion [perform operation] |