| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a period [coord] | 10 |
|
| 2 | [noun sg] [prep] a period [coord] | 8 |
|
| 3 | [prep] a [adj] period [coord] | 79 |
|
| 4 | [prep] a [adj] period [coord] | 72 |
|
| 5 | [prep] a long period [coord] | 14 |
|
| 6 | [prep] a short period [coord] | 11 |
|
| 7 | [prep] a long period [coord] | 11 |
|
| 8 | [prep] a short period [coord] | 9 |
|
| 9 | [prep] a [adj -er] period [coord] | 7 |
|
| 10 | [prep] a particular period [coord] | 6 |
|
| 11 | [prep] a particular period [coord] | 6 |
|
| 12 | [prep] a limited period [coord] | 6 |
|
| 13 | [prep] a limited period [coord] | 6 |
|
| 14 | [prep] a certain period [coord] | 5 |
|
| 15 | [prep] a certain period [coord] | 5 |
|
| 16 | [prep] a period [coord] [prep] | 5 |
|
| 17 | [prep] a period [coord] [prep] | 5 |
|
