| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun] when the | 572 |
|
| 2 | [noun] [noun] when the | 262 |
|
| 3 | [noun] a [noun] when | 52 |
|
| 4 | [noun] a [noun] the | 46 |
|
