| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | on what [vb mod] [vb infin] | 51 |
|
| 2 | on what [modal v] [vb infin] | 51 |
|
| 3 | on what [modal v] have | 32 |
|
| 4 | on what might [vb infin] | 18 |
|
| 5 | on what might [vb infin] | 18 |
|
| 6 | on what would [vb infin] | 14 |
|
| 7 | on what would [vb infin] | 14 |
|
| 8 | on what [modal v] happen | 6 |
|
