| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they must [vb infin] the | 123 |
|
| 2 | they must [verb] the | 123 |
|
| 3 | they must have the | 8 |
|
| 4 | they must have the | 8 |
|
| 5 | they must know the | 5 |
|
| 6 | they must know the | 5 |
|
| 7 | they must sign the | 5 |
|
| 8 | they must sign the | 5 |
|
