| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] at [adv] [adj] | 459 |
|
| 2 | must [vb infin] [adv] [adj] | 289 |
|
| 3 | must [vb infin] at [adv] | 131 |
|
| 4 | must [vb infin] at [adj] | 35 |
|
