| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [modal v] [vb infin] | 8998 |
|
| 2 | [vb -s] [modal v] [vb infin] | 416 |
|
| 3 | who [vb -s] [vb infin] | 46 |
|
| 4 | who [vb -s] [modal v] | 23 |
|
