| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [adv] [be] [verb] | 1842 |
|
| 2 | it [modal v] [adv] [be] [vb pp] | 1779 |
|
| 3 | [pron] [modal v] [adv] [be] seen | 173 |
|
| 4 | it [modal v] [adv] [be] seen | 99 |
|
| 5 | it [modal v] [adv] [be] seen | 80 |
|
| 6 | it [modal v] [adv] [be] see | 79 |
|
