| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] [conj] [verb] [prep] [art] | 337 |
|
| 2 | must [vb infin] [conj] [verb] [prep] [art] | 21 |
|
| 3 | must [vb infin] [conj] [verb] [prep] [art] | 21 |
|
| 4 | must [verb] [conj] [verb] [prep] [art] | 21 |
|
