| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | seem to have been [verb] [prep] | 294 |
|
| 2 | seem to have been [vb pp] [prep] | 279 |
|
| 3 | [verb] to have been written [prep] | 14 |
|
| 4 | seem have been written [prep] | 6 |
|
| 5 | seem [to-vb] been written [prep] | 6 |
|
| 6 | seem [verb] been written [prep] | 6 |
|
| 7 | seem to have be written [prep] | 6 |
|
| 8 | seem to have been written [prep] | 6 |
|
| 9 | seem to have been write [prep] | 6 |
|
| 10 | seem to have [been] written [prep] | 6 |
|
| 11 | seem to have [be] written [prep] | 6 |
|
