| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [verb] [to-vb] | 325 |
|
| 2 | it is [adv] [verb] [to-vb] | 226 |
|
| 3 | [pron] is often [verb] [to-vb] | 23 |
|
| 4 | it is often [verb] [verb] | 15 |
|
| 5 | [pers pn] is often [verb] [to-vb] | 14 |
|
| 6 | it [be] often [verb] [to-vb] | 13 |
|
| 7 | it be often [verb] [to-vb] | 13 |
|
| 8 | it is often [verb] [to-vb] | 11 |
|
| 9 | it [is] often [verb] [to-vb] | 11 |
|
| 10 | it is often [verb] [to-vb] | 11 |
|
