| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be happening at the [noun] | 40 |
|
| 2 | [be] happening at the [noun] | 40 |
|
| 3 | [be] happening at the [noun sg] | 36 |
|
| 4 | [is] happening at the [noun] | 24 |
|
| 5 | is happening at the [noun] | 16 |
|
| 6 | [be] happening at the moment | 13 |
|
| 7 | [be] happening at the moment | 13 |
|
| 8 | [was/were] happening at the [noun] | 11 |
|
| 9 | was happening at the [noun] | 10 |
|
| 10 | 's happening at the [noun] | 8 |
|
| 11 | [be] happening at the time | 7 |
|
| 12 | [be] happening at the time | 7 |
|
