| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [indef pn] must [verb] for | 13 |
|
| 2 | [indef pn] must [verb] for | 13 |
|
| 3 | [indef pn] must [vb infin] for | 13 |
|
| 4 | one must [verb] for | 10 |
|
