| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [adv] [vb pp] | 720 |
|
| 2 | it is [adv] [adv] [vb pp] | 509 |
|
| 3 | [pron] is often [adv] [vb pp] | 27 |
|
| 4 | it [be] often [adv] [vb pp] | 13 |
|
| 5 | it be often [adv] [vb pp] | 13 |
|
| 6 | [pers pn] is often [adv] [vb pp] | 12 |
|
| 7 | it is often [adv] [vb pp] | 11 |
|
| 8 | it is often [adv] [vb pp] | 11 |
|
| 9 | it [is] often [adv] [vb pp] | 11 |
|
| 10 | it is often [adv] [verb] | 11 |
|
