| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [that] the [noun sg] is | 30 |
|
| 2 | must [vb infin] [that] the [noun sg] is | 30 |
|
| 3 | must [vb infin] that the [noun sg] is | 30 |
|
| 4 | must ensure [that] the [noun sg] is | 11 |
|
