| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been written [prep] | 347 |
|
| 2 | [to-vb] been [prep] | 289 |
|
| 3 | [to-vb] been written | 30 |
|
| 4 | [to-vb] written [prep] | 9 |
|
