| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must be on [art] [noun] | 41 |
|
| 2 | must [be] on [art] [noun sg] | 36 |
|
| 3 | must [be] on the [noun] | 34 |
|
| 4 | must [be] on a [noun] | 7 |
|
