| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [prep] the | 1118 |
|
| 2 | [vb infin] [prep] the first | 268 |
|
| 3 | must [vb infin] the first | 12 |
|
| 4 | must [prep] the first | 9 |
|
