| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it must [vb infin] [prep] the | 50 |
|
| 2 | it must [vb infin] [prep] the | 50 |
|
| 3 | it must [vb infin] to the | 17 |
|
| 4 | it must [vb infin] with the | 6 |
|
| 5 | it must [vb infin] from the | 5 |
|
| 6 | it must come [prep] the | 5 |
|
