| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | when i [vb past] [pers pn] [vb past] | 99 |
|
| 2 | when i [vb past] back [pers pn] | 26 |
|
| 3 | i [vb past] back [pers pn] [vb past] | 17 |
|
