| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for a [adj -er] period | 65 |
|
| 2 | for a [adj -er] period | 63 |
|
| 3 | for a longer period | 30 |
|
| 4 | for a further period | 14 |
|
| 5 | for a shorter period | 14 |
|
