| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] when [noun sg] | 202 |
|
| 2 | [prep] [noun pl] when [noun sg] | 25 |
|
| 3 | [prep] periods when [noun] | 7 |
|
| 4 | [prep] periods [conj] [noun sg] | 6 |
|
| 5 | [prep] period when [noun sg] | 5 |
|
| 6 | [prep] periods [subord] [noun sg] | 5 |
|
| 7 | [prep] periods when [noun sg] | 5 |
|
