| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | conference [modal v] [be] hold [prep] | 32 |
|
| 2 | [adj] [modal v] [be] hold [prep] | 29 |
|
| 3 | [adj] conference [be] hold [prep] | 20 |
|
| 4 | [adj] conference [modal v] [be] hold | 13 |
|
