| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] have been sitting [adv] | 7 |
|
| 2 | who [verb] been sitting [adv] | 7 |
|
| 3 | [Wh pn] had been sitting [adv] | 6 |
|
| 4 | [Wh pn] [vb past] been sitting [adv] | 6 |
|
