| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] [prep] | 65865 |
|
| 2 | been [vb pp] [prep] | 58901 |
|
| 3 | [be] thought [prep] | 1454 |
|
| 4 | be thought [prep] | 1454 |
|
| 5 | been think [prep] | 255 |
|
| 6 | [been] thought [prep] | 54 |
|
