| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be held on the [num ord] [noun] | 18 |
|
| 2 | be held on the [num ord] [noun prp] | 16 |
|
| 3 | be held on the [num ord] [noun] | 7 |
|
| 4 | be held on the last [noun] | 5 |
|
