| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] [adv] [be] [verb] | 3240 |
|
| 2 | it [vb mod] [adv] [be] [vb pp] | 3103 |
|
| 3 | [pron] [vb mod] [adv] [be] seen | 274 |
|
| 4 | it [vb mod] [adv] [be] see | 100 |
|
| 5 | it [modal v] [adv] [be] seen | 100 |
|
