| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [pron] [adv] | 266 |
|
| 2 | it must [vb infin] [pron] | 100 |
|
| 3 | it must [vb infin] [adv] | 93 |
|
| 4 | it [vb infin] [pron] [adv] | 59 |
|
