| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] for [art] period | 50 |
|
| 2 | be [vb pp] for a period | 38 |
|
| 3 | be [vb pp] for [art] period | 20 |
|
| 4 | be [vb pp] for the period | 12 |
|
| 5 | is [vb pp] for [art] period | 8 |
|
| 6 | were [vb pp] for [art] period | 6 |
|
| 7 | been [vb pp] for [art] period | 6 |
|
| 8 | was [vb pp] for [art] period | 6 |
|
