| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun] | 139232 |
|
| 2 | at [noun sg] | 47571 |
|
| 3 | [prep] time | 17634 |
|
| 4 | [prep] time | 17631 |
|
| 5 | at time | 2262 |
|
| 6 | at time | 227 |
|
