| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun] [prep] a period | 155 |
|
| 2 | [prep] [noun] [prep] a period | 155 |
|
| 3 | [prep] [noun sg] [prep] a period | 100 |
|
| 4 | [prep] [noun] over a period | 56 |
|
| 5 | [prep] [noun] over a period | 56 |
|
| 6 | [prep] [noun] for a period | 52 |
|
| 7 | [prep] [noun] for a period | 52 |
|
| 8 | of [noun] [prep] a period | 47 |
|
| 9 | of [noun] [prep] a period | 47 |
|
| 10 | [prep] [noun pl] [prep] a period | 33 |
|
| 11 | in [noun] [prep] a period | 28 |
|
| 12 | in [noun] [prep] a period | 28 |
|
| 13 | to [noun] [prep] a period | 17 |
|
| 14 | to [noun] [prep] a period | 17 |
|
| 15 | [prep] [noun prp] [prep] a period | 17 |
|
| 16 | for [noun] [prep] a period | 16 |
|
| 17 | for [noun] [prep] a period | 16 |
|
| 18 | at [noun] [prep] a period | 10 |
|
| 19 | at [noun] [prep] a period | 10 |
|
| 20 | [prep] [noun] after a period | 10 |
|
| 21 | [prep] [noun] after a period | 10 |
|
| 22 | from [noun] [prep] a period | 9 |
|
| 23 | from [noun] [prep] a period | 9 |
|
| 24 | [prep] [noun] in a period | 8 |
|
| 25 | on [noun] [prep] a period | 8 |
|
| 26 | on [noun] [prep] a period | 8 |
|
| 27 | [prep] [noun] in a period | 8 |
|
| 28 | [prep] [noun] of a period | 7 |
|
| 29 | by [noun] [prep] a period | 7 |
|
| 30 | [prep] [noun] of a period | 7 |
|
