| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [be] [vb pp] in | 3018 |
|
| 2 | [be] [vb pp] in 1988 | 86 |
|
| 3 | [vb past] [vb pp] in 1988 | 8 |
|
