| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at that time | 2510 |
|
| 2 | at this time | 1835 |
|
| 3 | at any time | 1403 |
|
| 4 | at some time | 427 |
|
| 5 | at half time | 72 |
|
| 6 | at another time | 22 |
|
| 7 | at such time | 12 |
|
| 8 | at each time | 9 |
|
| 9 | at same time | 6 |
|
