| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [verb] at | 206 |
|
| 2 | [modal v] [verb] at first | 48 |
|
| 3 | it [verb] at first | 34 |
|
| 4 | it [modal v] at first | 15 |
|
| 5 | it [modal v] [verb] first | 9 |
|
