| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] when [noun] [noun sg] | 174 |
|
| 2 | [noun sg] when [noun] [noun sg] | 103 |
|
| 3 | period when [noun] [noun] | 19 |
|
| 4 | period [adv] [noun] [noun sg] | 9 |
|
| 5 | period when [noun] [noun sg] | 9 |
|
