| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] several times | 49 |
|
| 2 | has been [vb pp] several time | 25 |
|
| 3 | had been [vb pp] several time | 13 |
|
| 4 | have been [vb pp] several time | 7 |
|
| 5 | have been mentioned several time | 5 |
|
