| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to have written [prep] | 6 |
|
| 2 | [vb pp] to have written [prep] | 6 |
|
| 3 | to have [been] written [prep] | 22 |
|
| 4 | to have [be] written [prep] | 22 |
|
| 5 | to have be written [prep] | 22 |
|
| 6 | to have been written [prep] | 22 |
|
