| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [verb] [verb] that | 65 |
|
| 2 | must be [vb pp] [verb] that | 63 |
|
| 3 | must be [verb] [to-vb] that | 62 |
|
| 4 | must be [verb] ensure that | 45 |
|
| 5 | must be [verb] to ensure that | 45 |
|
| 6 | must be take [verb] that | 35 |
|
| 7 | must be taken [verb] that | 35 |
|
| 8 | must be made [verb] that | 10 |
|
| 9 | must be make [verb] that | 10 |
|
