| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [be] [verb] | 38032 |
|
| 2 | had [be] [vb pp] | 31891 |
|
| 3 | [verb] [be] established | 658 |
|
| 4 | have [be] established | 648 |
|
| 5 | had [be] establish | 222 |
|
| 6 | [vb past] [be] established | 218 |
|
