| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have [be] [vb pp] | 4261 |
|
| 2 | have [be] [vb pp] back | 263 |
|
| 3 | which [be] [vb pp] back | 20 |
|
| 4 | which have [vb pp] back | 8 |
|
