| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and it be estimated [that] | 30 |
|
| 2 | and it [be] estimated that | 30 |
|
| 3 | and it [is] estimated [that] | 17 |
|
| 4 | and it is estimated [that] | 16 |
|
| 5 | and it was estimated [that] | 13 |
|
| 6 | and it [was/were] estimated [that] | 13 |
|
