| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be [vb pp] [prep] | 49407 |
|
| 2 | be [vb pp] operate [prep] | 87 |
|
| 3 | have be operate [prep] | 63 |
|
| 4 | have be [vb pp] operate | 17 |
|
| 5 | have [vb pp] operate [prep] | 12 |
|
