| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb past] been vacant since [art] | 5 |
|
| 2 | which [vb past] been [adj] since [art] | 5 |
|
| 3 | which [vb past] been [adj] since [art] | 5 |
|
| 4 | which had been [adj] since [art] | 5 |
|
| 5 | which [vb past] been [adj] since the | 5 |
|
| 6 | which [vb past] been vacant since [art] | 5 |
|
