| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [verb] | 26432 |
|
| 2 | it [is] [vb pp] | 17495 |
|
| 3 | [pron] [is] referred | 61 |
|
| 4 | it [be] referred | 44 |
|
| 5 | it [is] refer | 20 |
|
