| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [vb pp] [prep] | 12840 |
|
| 2 | when it be [vb pp] | 1351 |
|
| 3 | when it be [prep] | 151 |
|
| 4 | when be [vb pp] [prep] | 13 |
|
| 5 | when it [vb pp] [prep] | 5 |
|
