| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun] [vb past] | 1281 |
|
| 2 | at time [verb] | 242 |
|
| 3 | [prep] time [vb past] | 188 |
|
| 4 | [prep] time [vb past] | 188 |
|
| 5 | at time [vb past] | 56 |
|
