| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when did [pers pn] last see [pers pn] | 7 |
|
| 2 | [Wh adv] did [pers pn] last see [pers pn] | 7 |
|
| 3 | [adv] did [pers pn] last see [pers pn] | 7 |
|
| 4 | when did [pers pn] last see [pers pn] | 7 |
|
