| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [vb pp] [prep] [be] | 698 |
|
| 2 | it had be [vb pp] [prep] | 665 |
|
| 3 | had be [vb pp] [prep] [be] | 126 |
|
| 4 | it had [vb pp] [prep] [be] | 33 |
|
