| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [is] [vb pp] [verb] | 594 |
|
| 2 | which [is] [verb] at | 175 |
|
| 3 | which [is] [vb pp] at | 153 |
|
| 4 | [is] [vb pp] [verb] at | 112 |
|
