| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] a [adj] period [prep] | 76 |
|
| 2 | [adv] [prep] a [adj] period [prep] | 76 |
|
| 3 | [adv] [prep] a [adj] period [prep] | 74 |
|
| 4 | [adv] [prep] a [adj] period [prep] | 59 |
|
| 5 | [adv] [prep] a [adj] period of | 57 |
|
| 6 | [adv] [prep] a [adj] period of | 57 |
|
| 7 | [adv] for a [adj] period [prep] | 30 |
|
| 8 | [adv] for a [adj] period [prep] | 30 |
|
| 9 | [adv] over a [adj] period [prep] | 18 |
|
| 10 | [adv] over a [adj] period [prep] | 18 |
|
| 11 | [adv prt] [prep] a [adj] period [prep] | 16 |
|
| 12 | [adv] [prep] a long period [prep] | 16 |
|
| 13 | [adv] [prep] a long period [prep] | 16 |
|
| 14 | [adv] [prep] a short period [prep] | 14 |
|
| 15 | [adv] [prep] a short period [prep] | 14 |
|
| 16 | only [prep] a [adj] period [prep] | 11 |
|
| 17 | only [prep] a [adj] period [prep] | 11 |
|
| 18 | apart [prep] a [adj] period [prep] | 10 |
|
| 19 | apart [prep] a [adj] period [prep] | 10 |
|
| 20 | [adv] after a [adj] period [prep] | 8 |
|
| 21 | [adv] after a [adj] period [prep] | 8 |
|
| 22 | [adv] from a [adj] period [prep] | 6 |
|
| 23 | [adv] from a [adj] period [prep] | 6 |
|
| 24 | [adv] [prep] a brief period [prep] | 6 |
|
| 25 | [adv] [prep] a brief period [prep] | 6 |
|
| 26 | [adv] [prep] a continuous period [prep] | 5 |
|
| 27 | [adv] [prep] a continuous period [prep] | 5 |
|
| 28 | [adv] [prep] a [adj] period in | 5 |
|
| 29 | [adv] [prep] a [adj] period in | 5 |
|
