| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] period [prep] | 773 |
|
| 2 | [prep] a [adj] period [prep] | 773 |
|
| 3 | [prep] a [adj] [noun] during | 210 |
|
| 4 | [prep] a [adj] [noun sg] during | 197 |
|
| 5 | [prep] [art] [adj] period during | 17 |
|
| 6 | [prep] [art] [adj] period during | 17 |
|
| 7 | [prep] a [adj] period during | 13 |
|
| 8 | [prep] a [adj] period during | 13 |
|
| 9 | [prep] a [adj] period during | 13 |
|
| 10 | [prep] a [adj] period during | 13 |
|
