| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] a [noun sg] [prep] | 411 |
|
| 2 | we [vb infin] a [noun sg] [prep] | 168 |
|
| 3 | we must [vb infin] a [noun sg] | 75 |
|
| 4 | we must [vb infin] [noun sg] [prep] | 64 |
|
