| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it had be [vb pp] [prep] | 665 |
|
| 2 | after it be [vb pp] [prep] | 67 |
|
| 3 | after it had be [vb pp] | 53 |
|
| 4 | after it had [vb pp] [prep] | 15 |
|
