| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [been] approve by | 45 |
|
| 2 | [vb past] been approve by | 45 |
|
| 3 | had [be] approve by | 45 |
|
| 4 | [vb past] [be] approved by | 45 |
|
| 5 | [vb past] be approve by | 45 |
|
