| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [adv] [vb past] [prep] | 919 |
|
| 2 | [adv] [vb past] back [prep] | 487 |
|
| 3 | they [vb past] back [prep] | 316 |
|
| 4 | they [adv] [vb past] back | 36 |
|
