| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be [vb pp] at [art] [noun] | 55 |
|
| 2 | [vb mod] be [vb pp] at [art] outset | 34 |
|
| 3 | [modal v] be [vb pp] at [art] outset | 34 |
|
| 4 | must be [vb pp] [prep] [art] outset | 15 |
|
| 5 | must [be] [vb pp] at [art] outset | 13 |
|
| 6 | must be [vb pp] at [art] outset | 13 |
|
| 7 | must be [verb] at [art] outset | 13 |
|
| 8 | must [be] [vb pp] at [art] outset | 13 |
|
| 9 | must be [vb pp] at [art] outset | 13 |
|
| 10 | must be [vb pp] at [art] outset | 13 |
|
