| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] be [prep] | 2999 |
|
| 2 | be operate [prep] | 614 |
|
| 3 | [vb base] operate [prep] | 74 |
|
| 4 | [vb base] be operate | 30 |
|
