| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for [adj] periods | 489 |
|
| 2 | for long period | 269 |
|
| 3 | for short period | 85 |
|
| 4 | for brief period | 14 |
|
| 5 | for prolonged period | 12 |
|
| 6 | for extended period | 11 |
|
| 7 | for lengthy period | 9 |
|
| 8 | for considerable period | 8 |
|
| 9 | for limited period | 7 |
|
| 10 | for varying period | 6 |
|
| 11 | for certain period | 5 |
|
| 12 | for substantial period | 5 |
|
| 13 | for fixed period | 5 |
|
