| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [vb pp] | 4713 |
|
| 2 | it is [adv] [vb pp] | 3866 |
|
| 3 | [pron] is often [vb pp] | 551 |
|
| 4 | it [be] often [vb pp] | 434 |
|
| 5 | it be often [vb pp] | 434 |
|
| 6 | [pers pn] is often [vb pp] | 391 |
|
| 7 | it [is] often [vb pp] | 383 |
|
| 8 | it is often [verb] | 364 |
|
| 9 | it is often [vb pp] | 362 |
|
| 10 | it is often [vb pp] | 362 |
|
