| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a longer period | 86 |
|
| 2 | [prep] a longer period | 86 |
|
| 3 | over a longer period | 51 |
|
| 4 | over a longer period | 51 |
|
| 5 | for a longer period | 30 |
|
| 6 | for a longer period | 30 |
|
| 7 | [verb] a longer period | 9 |
|
| 8 | [conj] a longer period | 7 |
|
| 9 | be a longer period | 5 |
|
| 10 | [be] a longer period | 5 |
|
| 11 | a [adv] longer period | 25 |
|
| 12 | a [adv] longer period | 25 |
|
| 13 | a much longer period | 19 |
|
| 14 | a much longer period | 19 |
|
| 15 | a longer [noun sg] period | 9 |
|
| 16 | a longer [noun] period | 9 |
|
| 17 | a longer period [prep] | 29 |
|
| 18 | a longer period [prep] | 29 |
|
| 19 | a longer period of | 22 |
|
| 20 | a longer period of | 22 |
|
| 21 | a longer period [conj] | 19 |
|
| 22 | a longer period than | 15 |
|
| 23 | a longer period [subord] | 15 |
|
| 24 | a longer period than | 15 |
|
| 25 | a longer period [modal v] | 5 |
|
| 26 | a longer period [vb mod] | 5 |
|
