| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the [noun] must be [verb] on | 31 |
|
| 2 | the [noun] must be [vb pp] on | 28 |
|
| 3 | the [noun] must be serve on | 8 |
|
| 4 | the [noun] must be served on | 8 |
|
| 5 | the [noun] must be on [art] | 8 |
|
| 6 | the [noun] must be on [art] | 8 |
|
| 7 | the [noun] must be on the | 6 |
|
| 8 | the [noun] must be on the | 6 |
|
