| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] for a [adj] period [prep] | 30 |
|
| 2 | [adv] for a [adj] period [prep] | 30 |
|
| 3 | [adv] for a [adj] period [prep] | 28 |
|
| 4 | [adv] for a [adj] period [prep] | 25 |
|
| 5 | [adv] for a [adj] period of | 23 |
|
| 6 | [adv] for a [adj] period of | 23 |
|
| 7 | [adv] for a short period [prep] | 8 |
|
| 8 | [adv] for a short period [prep] | 8 |
|
| 9 | only for a [adj] period [prep] | 6 |
|
| 10 | only for a [adj] period [prep] | 6 |
|
| 11 | apart for a [adj] period [prep] | 5 |
|
| 12 | apart for a [adj] period [prep] | 5 |
|
| 13 | [adv] for a continuous period [prep] | 5 |
|
| 14 | [adv] for a continuous period [prep] | 5 |
|
