| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] be [verb] [prep] an | 462 |
|
| 2 | [adv] be [verb] [prep] be | 327 |
|
| 3 | [adv] [verb] [prep] be an | 221 |
|
| 4 | be [verb] [prep] be an | 20 |
|
