| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a time when [noun] | 378 |
|
| 2 | a time when [adj] [noun] | 155 |
|
| 3 | [prep] a time when [adj] | 138 |
|
| 4 | [prep] a time [adj] [noun] | 9 |
|
