| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] if [pers pn] is [verb] | 6 |
|
| 2 | must [verb] if [pers pn] is [to-vb] | 6 |
|
| 3 | must [verb] if [pers pn] is [verb] | 6 |
|
| 4 | must [verb] if it is [verb] | 5 |
|
