| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] have been under | 13 |
|
| 2 | who [verb] been under | 13 |
|
| 3 | [Wh pn] [verb] been under | 13 |
|
| 4 | [Wh pn] [vb past] been under | 8 |
|
| 5 | [Wh pn] had been under | 8 |
|
