| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb past] at [noun prp] | 34 |
|
| 2 | it [vb past] at [noun sg] | 24 |
|
| 3 | it happened at [noun] | 10 |
|
| 4 | it [vb past] at [n mass] | 6 |
|
| 5 | it arrived at [noun] | 5 |
|
