| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have been [prep] | 651 |
|
| 2 | who have been [prep] | 651 |
|
| 3 | [pron] have been at | 445 |
|
| 4 | who [verb] been at | 72 |
|
| 5 | who have [been] at | 72 |
|
| 6 | who have be at | 72 |
|
| 7 | who have been at | 72 |
|
| 8 | who have [be] at | 72 |
|
