| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] which is [vb pp] at | 8 |
|
| 2 | [prep] which [is] [vb pp] at | 8 |
|
| 3 | of which [is] [vb pp] at | 7 |
|
| 4 | of which [is] [vb pp] at | 7 |
|
