| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is often [verb] | 364 |
|
| 2 | it is often [vb pp] | 362 |
|
| 3 | it is [adv] argued | 90 |
|
| 4 | it is [adv] argued | 88 |
|
| 5 | it be often argued | 25 |
|
| 6 | it [be] often argued | 25 |
|
| 7 | it is often argue | 22 |
|
| 8 | [pron] is often argued | 22 |
|
| 9 | it is often argued | 22 |
|
| 10 | it [is] often argued | 22 |
|
