| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] in a [adj] period [prep] | 10 |
|
| 2 | [noun] in a [adj] period [prep] | 8 |
|
| 3 | [vb pp] in a [adj] period [prep] | 7 |
|
| 4 | [noun sg] in a [adj] period [prep] | 6 |
|
| 5 | in a [adv] [adj] period [prep] | 16 |
|
| 6 | in a [adv] [adj] period [prep] | 16 |
|
| 7 | in a very [adj] period [prep] | 7 |
|
| 8 | in a very [adj] period [prep] | 7 |
|
| 9 | in a relatively [adj] period [prep] | 5 |
|
| 10 | in a relatively [adj] period [prep] | 5 |
|
| 11 | in a [adj] [noun] period [prep] | 6 |
|
| 12 | in a [adj] [noun sg] period [prep] | 6 |
|
| 13 | in a [adj] period [prep] [noun] | 21 |
|
| 14 | in a [adj] period [prep] [noun sg] | 21 |
|
| 15 | in a [adj] period [prep] time | 15 |
|
| 16 | in a [adj] period [prep] time | 15 |
|
| 17 | in a [adj] period [prep] [adj] | 7 |
|
| 18 | in a [adj] period [prep] [art] | 6 |
|
| 19 | in a [adj] period [prep] [art] | 6 |
|
| 20 | in a [adj] period [prep] the | 5 |
|
| 21 | in a [adj] period [prep] the | 5 |
|
