| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] to [art] | 6507 |
|
| 2 | then [vb pp] to [art] | 420 |
|
| 3 | then be [vb pp] to | 139 |
|
| 4 | then be [vb pp] [art] | 13 |
|
