| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at the [adj] time | 866 |
|
| 2 | at the time [conj] | 544 |
|
| 3 | at the [adj] [conj] | 245 |
|
| 4 | the [adj] time [conj] | 228 |
|
