| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] time when [noun] | 391 |
|
| 2 | [art] time when [adj] [noun] | 182 |
|
| 3 | at [art] time when [adj] | 143 |
|
| 4 | at [art] time [adj] [noun] | 6 |
|
