| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [vb pp] [det] time | 7 |
|
| 2 | must have [vb pp] [det] time | 7 |
|
| 3 | must [verb] [vb pp] [det] time | 7 |
|
| 4 | must have [vb pp] [det] time | 7 |
|
