| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [conj] [verb] | 12943 |
|
| 2 | must [vb infin] [verb] | 5615 |
|
| 3 | must [vb infin] [conj] | 2005 |
|
| 4 | must [conj] [verb] | 8 |
|
