| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun] [modal v] [be] hold [prep] | 43 |
|
| 2 | [art] conference [modal v] [be] hold [prep] | 17 |
|
| 3 | a conference [modal v] [be] [verb] [prep] | 7 |
|
| 4 | a conference [modal v] [be] hold [prep] | 6 |
|
