| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be [verb] | 99665 |
|
| 2 | [vb past] be [verb] | 41547 |
|
| 3 | [vb past] [prep] be | 18906 |
|
| 4 | [vb past] [prep] [verb] | 6364 |
|
