| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [be] thought to be | 38 |
|
| 2 | what be thought to be | 38 |
|
| 3 | what [was/were] thought to be | 18 |
|
| 4 | what [is] thought to be | 17 |
|
| 5 | what was thought to be | 17 |
|
| 6 | what is thought to be | 14 |
|
