| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] for [art] [adj] period | 28 |
|
| 2 | be [verb] for [art] [adj] period | 28 |
|
| 3 | [be] [verb] for a [adj] period | 23 |
|
| 4 | [be] [verb] for an [adj] period | 5 |
|
| 5 | [be] [verb] for [art] limited period | 5 |
|
