| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [vb infin] so [prep] [art] [noun] | 11 |
|
| 2 | must [vb infin] so [prep] [art] [noun sg] | 11 |
|
| 3 | must do so [prep] [art] [noun] | 10 |
|
| 4 | must [vb infin] so [prep] the [noun] | 7 |
|
