| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be a | 18648 |
|
| 2 | [vb mod] be [prep] | 14380 |
|
| 3 | be [prep] a | 2576 |
|
| 4 | [vb mod] [prep] a | 325 |
|
