| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a period [prep] | 700 |
|
| 2 | [noun] [prep] a period [prep] | 700 |
|
| 3 | [noun] [prep] a period of | 652 |
|
| 4 | [noun sg] [prep] a period [prep] | 461 |
|
| 5 | [noun] over a period [prep] | 295 |
|
| 6 | [noun] over a period [prep] | 295 |
|
| 7 | [noun pl] [prep] a period [prep] | 193 |
|
| 8 | [noun] for a period [prep] | 190 |
|
| 9 | [noun] for a period [prep] | 190 |
|
| 10 | [noun] of a period [prep] | 48 |
|
| 11 | [noun] of a period [prep] | 48 |
|
| 12 | [noun] after a period [prep] | 38 |
|
| 13 | [noun] after a period [prep] | 38 |
|
| 14 | [noun prp] [prep] a period [prep] | 32 |
|
| 15 | [noun] in a period [prep] | 32 |
|
| 16 | [noun] in a period [prep] | 32 |
|
| 17 | [noun] during a period [prep] | 26 |
|
| 18 | [noun] during a period [prep] | 26 |
|
| 19 | [noun] [prep] a period in | 23 |
|
| 20 | [noun] within a period [prep] | 16 |
|
| 21 | [noun] within a period [prep] | 16 |
|
| 22 | [noun] with a period [prep] | 14 |
|
| 23 | [noun] to a period [prep] | 14 |
|
| 24 | [noun] with a period [prep] | 14 |
|
| 25 | [noun] to a period [prep] | 14 |
|
| 26 | [n mass] [prep] a period [prep] | 13 |
|
| 27 | end [prep] a period [prep] | 12 |
|
| 28 | end [prep] a period [prep] | 12 |
|
| 29 | place [prep] a period [prep] | 12 |
|
| 30 | place [prep] a period [prep] | 11 |
|
