| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [vb mod] [vb infin] [verb] | 1497 |
|
| 2 | [pron] [vb mod] [vb infin] lead | 60 |
|
| 3 | which [modal v] [vb infin] lead | 18 |
|
| 4 | which [vb mod] [verb] lead | 18 |
|
