| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] [noun] | 76118 |
|
| 2 | back [prep] [noun] | 10787 |
|
| 3 | [vb past] back [prep] | 8025 |
|
| 4 | [vb past] back [noun] | 174 |
|
