| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when [pers pn] [is] known | 9 |
|
| 2 | when [pron] [is] known | 9 |
|
| 3 | when [pron] is known | 8 |
|
| 4 | when it [is] known | 8 |
|
| 5 | when it [is] known | 8 |
|
