| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be extracted from the | 17 |
|
| 2 | is extracted from the | 12 |
|
| 3 | been extracted from the | 10 |
|
| 4 | were extracted from the | 7 |
|
| 5 | are extracted from the | 7 |
|
| 6 | was extracted from the | 7 |
|
