| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it is [adv] [vb pp] | 815 |
|
| 2 | [subord] it is [adv] [vb pp] | 609 |
|
| 3 | [conj] it is often [vb pp] | 75 |
|
| 4 | [subord] it [be] often [vb pp] | 48 |
|
| 5 | [subord] it be often [vb pp] | 48 |
|
| 6 | [subord] [pron] is often [vb pp] | 43 |
|
| 7 | [subord] it [is] often [vb pp] | 42 |
|
| 8 | [subord] [pers pn] is often [vb pp] | 42 |
|
| 9 | [subord] it is often [verb] | 39 |
|
| 10 | [subord] it is often [vb pp] | 39 |
|
| 11 | [subord] it is often [vb pp] | 39 |
|
