| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] at a later | 51 |
|
| 2 | was [vb pp] at a later | 8 |
|
| 3 | be added at a later | 6 |
|
| 4 | were [vb pp] at a later | 6 |
|
| 5 | been [vb pp] at a later | 5 |
|
