| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be [prep] [art] same level | 6 |
|
| 2 | [modal v] be [prep] [art] same level | 6 |
|
| 3 | be [vb pp] [prep] [art] same level | 10 |
|
| 4 | be [verb] [prep] [art] same level | 10 |
|
