| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] it [prep] | 9735 |
|
| 2 | [vb past] it [modal v] | 2396 |
|
| 3 | it [modal v] [prep] | 1342 |
|
| 4 | [vb past] [modal v] [prep] | 14 |
|
