| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [noun sg] [prep] a [noun] | 704 |
|
| 2 | must [vb infin] [prep] a [noun] | 128 |
|
| 3 | must [vb infin] [noun sg] [prep] [noun] | 110 |
|
| 4 | must [vb infin] [noun sg] [prep] a | 36 |
|
