| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] back [prep] [art] | 1369 |
|
| 2 | [vb pp] [prep] [art] time | 1354 |
|
| 3 | back [prep] [art] time | 77 |
|
| 4 | [vb pp] back [prep] time | 18 |
|
