| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a [adj] period of | 135 |
|
| 2 | [verb] a longer [noun] of | 24 |
|
| 3 | [verb] a [adj -er] period of | 16 |
|
| 4 | [verb] a long period of | 16 |
|
| 5 | [verb] a longer period [prep] | 7 |
|
| 6 | [verb] a longer period [prep] | 7 |
|
| 7 | [verb] [art] longer period of | 5 |
|
| 8 | [verb] a longer period of | 5 |
|
| 9 | [verb] [art] longer period of | 5 |
|
| 10 | [verb] a longer period of | 5 |
|
