| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] to [art] period | 13 |
|
| 2 | [be] [vb pp] to [art] period | 13 |
|
| 3 | [be] [vb pp] to the period | 9 |
|
| 4 | [be] [vb pp] to the period | 9 |
|
| 5 | [is] [vb pp] to [art] period | 6 |
|
| 6 | is [vb pp] to [art] period | 6 |
|
