| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] be [adv] | 543 |
|
| 2 | [vb infin] i be [adv] | 188 |
|
| 3 | must [vb infin] i be | 105 |
|
| 4 | must [vb infin] i [adv] | 48 |
|
