| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be thought to be | 51 |
|
| 2 | it be thought to [be] | 51 |
|
| 3 | it be thought to be | 51 |
|
| 4 | it is thought to [be] | 26 |
|
| 5 | it was thought to [be] | 21 |
|
