| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [vb pp] | 524622 |
|
| 2 | have [vb pp] | 500557 |
|
| 3 | [vb past] [vb pp] | 181764 |
|
| 4 | had [verb] | 176074 |
|
