| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [vb pp] [prep] | 49363 |
|
| 2 | have [vb pp] back [prep] | 708 |
|
| 3 | have [been] [vb pp] back | 263 |
|
| 4 | [been] [vb pp] back [prep] | 202 |
|
| 5 | have [been] back [prep] | 69 |
|
