| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun sg] [prep] a [adj] period | 85 |
|
| 2 | of [noun] [prep] a [adj] period | 67 |
|
| 3 | [prep] [noun] over a [adj] period | 51 |
|
| 4 | [prep] [noun] for a [adj] period | 50 |
|
| 5 | [prep] [noun] [prep] a long period | 36 |
|
| 6 | [prep] [noun pl] [prep] a [adj] period | 30 |
|
| 7 | in [noun] [prep] a [adj] period | 21 |
|
| 8 | [prep] [noun prp] [prep] a [adj] period | 19 |
|
| 9 | to [noun] [prep] a [adj] period | 17 |
|
| 10 | [prep] [noun] [prep] a short period | 10 |
|
| 11 | [prep] [noun] within a [adj] period | 9 |
|
| 12 | [prep] [noun] after a [adj] period | 9 |
|
| 13 | [prep] [noun] during a [adj] period | 9 |
|
| 14 | [prep] [n mass] [prep] a [adj] period | 7 |
|
| 15 | for [noun] [prep] a [adj] period | 6 |
|
| 16 | with [noun] [prep] a [adj] period | 6 |
|
| 17 | [prep] [noun] [prep] a limited period | 6 |
|
| 18 | [prep] [noun] [prep] a specified period | 6 |
|
| 19 | on [noun] [prep] a [adj] period | 5 |
|
| 20 | [prep] [noun] [prep] a particular period | 5 |
|
| 21 | [prep] [noun] in a [adj] period | 5 |
|
