| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to be [vb pp] at a | 179 |
|
| 2 | have to be [vb pp] at | 55 |
|
| 3 | have to be [vb pp] a | 13 |
|
| 4 | have be [vb pp] at a | 12 |
|
