| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] a [adj] period of | 18 |
|
| 2 | [prep] [adv] a [adj] period of | 9 |
|
| 3 | [prep] [adv] a [adj] period of | 9 |
|
| 4 | for [adv] a [adj] period of | 6 |
|
| 5 | for [adv] a [adj] period of | 6 |
|
| 6 | be [adv] a [adj] period of | 5 |
|
| 7 | [be] [adv] a [adj] period of | 5 |
|
| 8 | [adv] [prep] a [adj] period of | 57 |
|
| 9 | [adv] [prep] a [adj] period of | 57 |
|
| 10 | [adv] for a [adj] period of | 23 |
|
| 11 | [adv] for a [adj] period of | 23 |
|
| 12 | [adv] [verb] a [adj] period of | 19 |
|
| 13 | [adv] over a [adj] period of | 12 |
|
| 14 | [adv] over a [adj] period of | 12 |
|
| 15 | [adv] after a [adj] period of | 8 |
|
| 16 | [adv] after a [adj] period of | 8 |
|
| 17 | [adv] [vb past] a [adj] period of | 6 |
|
| 18 | [adv] [conj] a [adj] period of | 5 |
|
| 19 | [adv] a [adj] period of [noun] | 33 |
|
| 20 | [adv] a [adj] period of [noun sg] | 32 |
|
| 21 | [adv] a [adj] period of time | 28 |
|
| 22 | [adv] a [adj] period of time | 28 |
|
