| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] [adv] a period | 21 |
|
| 2 | [prep] [adv] [adv] a period | 21 |
|
| 3 | [adv] [adv] [adv] a period | 6 |
|
| 4 | in [adv] [adv] a period | 6 |
|
| 5 | in [adv] [adv] a period | 6 |
|
| 6 | for [adv] [adv] a period | 5 |
|
| 7 | for [adv] [adv] a period | 5 |
|
| 8 | [adv] [adv] [adv] a period | 6 |
|
| 9 | [adv] [adv] [adv] a period | 6 |
|
| 10 | [adv] [adv] [prep] a period | 9 |
|
| 11 | [adv] [adv] [prep] a period | 9 |
|
| 12 | [adv] [adv] [adv] a period | 6 |
|
| 13 | [adv] [adv] [adv] a period | 6 |
|
| 14 | [adv] [adv] over a period | 5 |
|
| 15 | [adv] [adv] over a period | 5 |
|
| 16 | [adv] [adv] a [adj] period | 7 |
|
| 17 | [adv] [adv] a [adj] period | 7 |
|
| 18 | [adv] [adv] a period [prep] | 13 |
|
| 19 | [adv] [adv] a period [prep] | 13 |
|
| 20 | [adv] [adv] a period of | 11 |
|
| 21 | [adv] [adv] a period of | 11 |
|
