| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a period of | 289 |
|
| 2 | [noun sg] over a period of | 165 |
|
| 3 | [noun pl] over a period of | 102 |
|
| 4 | [verb] over a period of | 75 |
|
| 5 | [vb pp] over a period of | 70 |
|
| 6 | [adv] over a period of | 60 |
|
| 7 | [adv] over a period of | 34 |
|
| 8 | [adj] over a period of | 27 |
|
| 9 | [conj] over a period of | 25 |
|
| 10 | [adv prt] over a period of | 25 |
|
| 11 | [coord] over a period of | 18 |
|
| 12 | [adj] over a period of | 18 |
|
| 13 | and over a period of | 12 |
|
| 14 | [noun prp] over a period of | 12 |
|
| 15 | and over a period of | 12 |
|
| 16 | place over a period of | 9 |
|
| 17 | [n mass] over a period of | 9 |
|
| 18 | up over a period of | 8 |
|
| 19 | up over a period of | 8 |
|
| 20 | place over a period of | 8 |
|
| 21 | [pron] over a period of | 7 |
|
| 22 | gradually over a period of | 7 |
|
| 23 | gradually over a period of | 7 |
|
| 24 | that over a period of | 6 |
|
| 25 | [that] over a period of | 6 |
|
| 26 | that over a period of | 6 |
|
| 27 | [pers pn] over a period of | 5 |
|
| 28 | make over a period of | 5 |
|
| 29 | out over a period of | 5 |
|
| 30 | made over a period of | 5 |
|
