| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who they [vb base] [vb mod] [verb] | 5 |
|
| 2 | who they [vb base] [modal v] [verb] | 5 |
|
| 3 | who they [vb base] [modal v] [verb] | 5 |
|
| 4 | who they [vb base] [modal v] [vb infin] | 5 |
|
