| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of which [was/were] [verb] [prep] | 309 |
|
| 2 | which [was/were] [verb] [prep] be | 169 |
|
| 3 | of which [verb] [prep] be | 44 |
|
| 4 | of which [was/were] [prep] be | 19 |
|
