| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must have [verb] [art] | 759 |
|
| 2 | [modal v] have see [art] | 195 |
|
| 3 | must [verb] see [art] | 33 |
|
| 4 | must [vb infin] see [art] | 33 |
|
| 5 | must have see [art] | 29 |
|
