| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [adv] be | 11237 |
|
| 2 | [verb] previously be | 545 |
|
| 3 | have previously be | 540 |
|
| 4 | [vb past] previously be | 339 |
|
| 5 | had previously [be] | 335 |
|
