| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [vb pp] | 103064 |
|
| 2 | have [vb pp] an | 5697 |
|
| 3 | have [been] an | 1643 |
|
| 4 | [been] [vb pp] an | 187 |
|
