| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who was at the | 47 |
|
| 2 | who are at the | 19 |
|
| 3 | who were at the | 19 |
|
| 4 | who is at the | 11 |
|
| 5 | who 's at the | 8 |
|
