| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | in a [adv] [adj] period of | 14 |
|
| 2 | in a [adv] [adj] period of | 14 |
|
| 3 | in a [adv] [adj] period of | 13 |
|
| 4 | in a [adv] short period of | 13 |
|
| 5 | in a [adv] short period of | 13 |
|
| 6 | in a very [adj] period of | 6 |
|
| 7 | in a very [adj] period of | 6 |
|
| 8 | in a relatively [adj] period of | 5 |
|
| 9 | in a relatively [adj] period of | 5 |
|
