| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] over a period of [noun] | 39 |
|
| 2 | [adv prt] over a period of [noun] | 20 |
|
| 3 | up [prep] a period of [noun] | 9 |
|
| 4 | up [prep] a period of [noun] | 9 |
|
| 5 | up over a [noun] of [noun] | 8 |
|
| 6 | up over [art] period of [noun] | 7 |
|
| 7 | up over a period of [noun] | 7 |
|
| 8 | up over a period [prep] [noun] | 7 |
|
| 9 | up over a period of [noun] | 7 |
|
| 10 | up over a period of [noun] | 7 |
|
| 11 | up over a period of [noun] | 7 |
|
| 12 | up over [art] period of [noun] | 7 |
|
| 13 | up over a period [prep] [noun] | 7 |
|
