| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a period of [noun pl] | 53 |
|
| 2 | [noun sg] over a period of [noun pl] | 30 |
|
| 3 | [noun pl] over a period of [noun pl] | 19 |
|
| 4 | [adv] over a period of [noun pl] | 17 |
|
| 5 | [vb pp] over a period of [noun pl] | 10 |
|
| 6 | [verb] over a period of [noun pl] | 10 |
|
| 7 | [adv] over a period of [noun pl] | 9 |
|
| 8 | [adv prt] over a period of [noun pl] | 8 |
|
| 9 | [adj] over a period of [noun pl] | 8 |
|
| 10 | [adj] over a period of [noun pl] | 7 |
|
| 11 | over a [adj] period of [noun pl] | 5 |
|
| 12 | over a [adj] period of [noun pl] | 5 |
|
| 13 | over a period of [adj] [noun pl] | 186 |
|
| 14 | over a period of [num] [noun pl] | 163 |
|
| 15 | over a period of two [noun pl] | 25 |
|
| 16 | over a period of two [noun pl] | 25 |
|
| 17 | over a period of [det] [noun pl] | 23 |
|
| 18 | over a period of three [noun pl] | 19 |
|
| 19 | over a period of three [noun pl] | 19 |
|
| 20 | over a period of several [noun pl] | 15 |
|
| 21 | over a period of several [noun pl] | 15 |
|
| 22 | over a period of five [noun pl] | 14 |
|
| 23 | over a period of five [noun pl] | 14 |
|
| 24 | over a period of six [noun pl] | 12 |
|
| 25 | over a period of six [noun pl] | 12 |
|
| 26 | over a period of four [noun pl] | 8 |
|
| 27 | over a period of four [noun pl] | 8 |
|
| 28 | over a period of ten [noun pl] | 7 |
|
| 29 | over a period of ten [noun pl] | 7 |
|
| 30 | over a period of twenty [noun pl] | 6 |
|
