| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adj] period during | 13 |
|
| 2 | [prep] [art] [adj] period during | 13 |
|
| 3 | [prep] [art] [adj] period during | 13 |
|
| 4 | [prep] a [adj] period during | 10 |
|
| 5 | [prep] a [adj] period during | 10 |
|
| 6 | for [art] [adj] period during | 6 |
|
| 7 | for [art] [adj] period during | 6 |
|
| 8 | [prep] [art] brief period during | 6 |
|
