| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] a [adj] | 39244 |
|
| 2 | back [prep] a [adj] | 574 |
|
| 3 | [vb pp] back [prep] [adj] | 357 |
|
| 4 | [vb pp] back [prep] a | 191 |
|
| 5 | [vb pp] back a [adj] | 10 |
|
