| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] [verb] [pron] [prep] | 165 |
|
| 2 | [modal v] [vb infin] do [pron] [prep] | 141 |
|
| 3 | must [verb] do [pron] [prep] | 5 |
|
