| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] [be] [prep] | 2063 |
|
| 2 | [pron] [vb mod] [be] at | 575 |
|
| 3 | [pers pn] [vb mod] [be] at | 451 |
|
| 4 | it [modal v] [be] at | 116 |
|
| 5 | it [vb mod] [be] at | 116 |
|
