| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] a [noun sg] [prep] [noun sg] | 3393 |
|
| 2 | must [vb infin] a [noun sg] [prep] | 411 |
|
| 3 | must [vb infin] a [noun sg] [noun sg] | 94 |
|
| 4 | must [vb infin] [noun sg] [prep] [noun sg] | 66 |
|
