| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a [adj] period [prep] | 97 |
|
| 2 | [noun] over a [adj] period [prep] | 91 |
|
| 3 | [noun] over a long period [prep] | 50 |
|
| 4 | [noun] over a long period [prep] | 45 |
|
| 5 | [noun] over a prolonged period [prep] | 8 |
|
| 6 | [noun] over a prolonged period [prep] | 8 |
|
| 7 | [noun] over a [adj -er] period [prep] | 6 |
|
| 8 | [noun] over a longer period [prep] | 5 |
|
| 9 | [adj] [noun] over a period [prep] | 109 |
|
| 10 | [adj] [noun] over a period [prep] | 70 |
|
| 11 | [art] [noun] over a period [prep] | 52 |
|
| 12 | [art] [noun] over a period [prep] | 52 |
|
| 13 | [prep] [noun] over a period [prep] | 51 |
|
| 14 | [prep] [noun] over a period [prep] | 51 |
|
| 15 | the [noun] over a period [prep] | 40 |
|
| 16 | the [noun] over a period [prep] | 40 |
|
| 17 | [noun] [noun] over a period [prep] | 38 |
|
| 18 | [noun sg] [noun] over a period [prep] | 31 |
|
| 19 | [det] [noun] over a period [prep] | 19 |
|
| 20 | of [noun] over a period [prep] | 18 |
|
| 21 | of [noun] over a period [prep] | 18 |
|
| 22 | [verb] [noun] over a period [prep] | 17 |
|
| 23 | [num] [noun] over a period [prep] | 15 |
|
| 24 | [pron] [noun] over a period [prep] | 13 |
|
| 25 | [pos pn] [noun] over a period [prep] | 13 |
|
| 26 | a [noun] over a period [prep] | 11 |
|
| 27 | in [noun] over a period [prep] | 11 |
|
| 28 | in [noun] over a period [prep] | 11 |
|
| 29 | [conj] [noun] over a period [prep] | 9 |
|
| 30 | [coord] [noun] over a period [prep] | 9 |
|
