| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] for [art] [adj] period | 66 |
|
| 2 | be [verb] for a [adj] period | 53 |
|
| 3 | be [verb] for [art] [adj] period | 28 |
|
| 4 | been [verb] for [art] [adj] period | 13 |
|
| 5 | was [verb] for [art] [adj] period | 10 |
|
| 6 | be [verb] for an [adj] period | 10 |
|
| 7 | are [verb] for [art] [adj] period | 8 |
|
| 8 | is [verb] for [art] [adj] period | 8 |
|
| 9 | be [verb] for [art] limited period | 7 |
|
| 10 | be [verb] for [art] long period | 7 |
|
| 11 | be [verb] for [art] short period | 7 |
|
| 12 | be [verb] for the [adj] period | 6 |
|
