| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i must [vb infin] | 3853 |
|
| 2 | [vb past] i [vb infin] | 2120 |
|
| 3 | [vb past] i must | 91 |
|
| 4 | [vb past] must [vb infin] | 27 |
|
