| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] [prep] [art] [noun] when | 22 |
|
| 2 | [modal v] [verb] [prep] [art] [noun sg] when | 19 |
|
| 3 | [modal v] [verb] [prep] [art] time [adv] | 17 |
|
| 4 | [modal v] [verb] [prep] [art] time [Wh adv] | 14 |
|
| 5 | [modal v] [verb] [prep] [art] time when | 12 |
|
| 6 | [modal v] [verb] [prep] [art] time when | 12 |
|
