| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb past] back [prep] | 3594 |
|
| 2 | [vb base] [pron] [vb past] [prep] | 889 |
|
| 3 | [vb base] [pron] back [prep] | 527 |
|
| 4 | [vb base] [pron] [vb past] back | 29 |
|
