| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] [art] longer period | 11 |
|
| 2 | [be] [vb pp] [prep] [art] longer period | 11 |
|
| 3 | be [vb pp] [prep] [art] longer period | 10 |
|
| 4 | [be] [vb pp] [prep] [art] longer period | 10 |
|
