| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [prep] several | 175 |
|
| 2 | have been [vb pp] several time | 49 |
|
| 3 | have been [vb pp] [prep] time | 38 |
|
| 4 | been [vb pp] [prep] several time | 6 |
|
