| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | only when they [verb] [vb pp] | 9 |
|
| 2 | only when they have [verb] | 9 |
|
| 3 | only when they [vb base] [verb] | 7 |
|
| 4 | only when they [vb past] [verb] | 6 |
|
