| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is estimated | 525 |
|
| 2 | was estimated | 438 |
|
| 3 | been estimated | 224 |
|
| 4 | be estimated | 157 |
|
| 5 | are estimated | 115 |
|
| 6 | were estimated | 106 |
|
| 7 | 's estimated | 42 |
|
