| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] to be [art] | 2501 |
|
| 2 | [vb past] to be [art] | 2501 |
|
| 3 | [vb past] to be a | 1553 |
|
| 4 | [verb] to be an | 1336 |
|
| 5 | [vb past] [prep] be an | 226 |
|
| 6 | [vb past] to [be] an | 219 |
|
