| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [prep] [pos pn] | 1098 |
|
| 2 | it [vb past] [prep] [pos pn] | 565 |
|
| 3 | it [vb past] be [prep] | 348 |
|
| 4 | [vb past] be [prep] [pos pn] | 239 |
|
| 5 | it [vb past] be [pos pn] | 91 |
|
