| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] at the [noun] | 52 |
|
| 2 | must be [verb] at the [noun sg] | 50 |
|
| 3 | [modal v] be [verb] at the time | 39 |
|
| 4 | must be [verb] [prep] the time | 13 |
|
| 5 | must be [verb] [prep] the time | 13 |
|
| 6 | must be [verb] at [art] time | 11 |
|
| 7 | must be [verb] at [art] time | 11 |
|
| 8 | must be [verb] at the time | 10 |
|
| 9 | must be [verb] at the time | 10 |
|
| 10 | must be [verb] at the time | 10 |
|
| 11 | must [be] [verb] at the time | 10 |
|
| 12 | must be [verb] at the time | 10 |
|
| 13 | must [be] [verb] at the time | 10 |
|
