| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] a period | 121 |
|
| 2 | [adv] [prep] a period | 121 |
|
| 3 | [adv] over a period | 39 |
|
| 4 | [adv] over a period | 39 |
|
| 5 | [adv] [verb] a period | 33 |
|
| 6 | [adv] [adv] a period | 31 |
|
| 7 | [adv] [adv] a period | 29 |
|
| 8 | [adv] for a period | 28 |
|
| 9 | [adv] for a period | 28 |
|
| 10 | [adv] after a period | 17 |
|
| 11 | [adv] after a period | 17 |
|
| 12 | [adv] long a period | 15 |
|
| 13 | [adv] long a period | 15 |
|
| 14 | [adv] in a period | 13 |
|
| 15 | [adv] in a period | 13 |
|
| 16 | [adv] [vb pp] a period | 13 |
|
| 17 | [adv] short a period | 8 |
|
| 18 | [adv] short a period | 8 |
|
| 19 | [adv] be a period | 8 |
|
| 20 | [adv] [be] a period | 8 |
|
| 21 | [adv] [adj] a period | 8 |
|
| 22 | [adv] [adj] a period | 8 |
|
| 23 | [adv] during a period | 6 |
|
| 24 | [adv] during a period | 6 |
|
| 25 | [adv] [vb infin] a period | 6 |
|
| 26 | [adv] [vb base] a period | 5 |
|
| 27 | [adv] [adv] a period | 32 |
|
| 28 | [adv] [adv] a period | 29 |
|
| 29 | be [adv] a period | 21 |
|
| 30 | [be] [adv] a period | 21 |
|
