| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] be [adj] | 535 |
|
| 2 | it [vb past] been [adj] | 493 |
|
| 3 | it [vb past] [been] [adj] | 493 |
|
| 4 | it had [be] [adj] | 489 |
|
| 5 | it [vb past] [be] [adj] | 371 |
|
| 6 | it [vb past] [be] [num] | 74 |
|
| 7 | it [vb past] [be] [det] | 63 |
|
| 8 | it [vb past] [was/were] [adj] | 38 |
|
| 9 | it [vb past] was [adj] | 31 |
|
| 10 | it [vb past] [be] one | 26 |
|
| 11 | it [vb past] [be] one | 26 |
|
| 12 | it [vb past] [be] possible | 21 |
|
| 13 | it [vb past] [be] possible | 21 |
|
| 14 | it [vb past] [be] [adj -er] | 21 |
|
| 15 | it [vb past] [be] easy | 19 |
|
| 16 | it [vb past] [be] easy | 15 |
|
| 17 | it [vb past] [be] necessary | 13 |
|
| 18 | it [vb past] [be] necessary | 13 |
|
| 19 | it [vb past] [be] such | 12 |
|
| 20 | it [vb past] [be] such | 12 |
|
| 21 | it [vb past] [be] that | 12 |
|
| 22 | it [vb past] [be] that | 12 |
|
| 23 | it [vb past] [be] impossible | 11 |
|
| 24 | it [vb past] [be] impossible | 11 |
|
| 25 | it [vb past] [be] some | 10 |
|
| 26 | it [vb past] [be] clear | 10 |
|
| 27 | it [vb past] [be] difficult | 10 |
|
| 28 | it [vb past] [be] difficult | 10 |
|
| 29 | it [vb past] [be] some | 10 |
|
| 30 | it [vb past] [be] clear | 10 |
|
