| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for a [adj] period [prep] | 320 |
|
| 2 | for a [adj] period [prep] | 305 |
|
| 3 | for a [adj] period [prep] | 272 |
|
| 4 | for a [adj] period of | 214 |
|
| 5 | for a [adj] period of | 214 |
|
| 6 | for a short period [prep] | 49 |
|
| 7 | for an [adj] period [prep] | 48 |
|
| 8 | for a short period [prep] | 46 |
|
| 9 | for a long period [prep] | 33 |
|
| 10 | for a [adj] period in | 32 |
|
| 11 | for a [adj] period in | 32 |
|
| 12 | for a long period [prep] | 27 |
|
| 13 | for a brief period [prep] | 21 |
|
| 14 | for a brief period [prep] | 21 |
|
| 15 | for a limited period [prep] | 19 |
|
| 16 | for a limited period [prep] | 19 |
|
| 17 | for a fixed period [prep] | 18 |
|
| 18 | for a continuous period [prep] | 18 |
|
| 19 | for a continuous period [prep] | 18 |
|
| 20 | for a fixed period [prep] | 18 |
|
| 21 | for a [adj -er] period [prep] | 15 |
|
| 22 | for a initial period [prep] | 13 |
|
| 23 | for a initial period [prep] | 13 |
|
| 24 | for a [adj] period after | 11 |
|
| 25 | for a [adj] period after | 11 |
|
| 26 | for a specified period [prep] | 10 |
|
| 27 | for a considerable period [prep] | 10 |
|
| 28 | for a maximum period [prep] | 10 |
|
| 29 | for a considerable period [prep] | 10 |
|
| 30 | for a specified period [prep] | 10 |
|
