| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] a [noun sg] | 37850 |
|
| 2 | must [vb infin] a | 1657 |
|
| 3 | must [vb infin] [noun sg] | 1196 |
|
| 4 | must a [noun sg] | 11 |
|
