| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] over a period of | 40 |
|
| 2 | [be] [verb] over a period of | 40 |
|
| 3 | [be] [verb] over a period of | 15 |
|
| 4 | be [verb] over a period of | 15 |
|
| 5 | [was/were] [verb] over a period of | 15 |
|
| 6 | was [verb] over a period of | 11 |
|
| 7 | [adv] [verb] over a period of | 8 |
|
| 8 | [adv] [verb] over a period of | 8 |
|
| 9 | [noun] [verb] over a period of | 8 |
|
| 10 | [verb] [verb] over a period of | 7 |
|
| 11 | [noun pl] [verb] over a period of | 7 |
|
| 12 | have [verb] over a period of | 6 |
|
| 13 | [verb] [adv] over a period of | 31 |
|
| 14 | [verb] [adv prt] over a period of | 19 |
|
| 15 | [verb] [noun] over a period of | 17 |
|
| 16 | [verb] [noun sg] over a period of | 12 |
|
| 17 | [verb] [adv] over a period of | 11 |
|
| 18 | [verb] [vb pp] over a period of | 7 |
|
| 19 | [verb] [verb] over a period of | 7 |
|
| 20 | [verb] [adj] over a period of | 6 |
|
| 21 | [verb] up over a period of | 6 |
|
| 22 | [verb] up over a period of | 6 |
|
| 23 | [verb] place over a period of | 5 |
|
| 24 | [verb] place over a period of | 5 |
|
| 25 | [verb] over a [adj] period of | 24 |
|
| 26 | [verb] over a [adj] period of | 22 |
|
| 27 | [verb] over a long period of | 15 |
|
| 28 | [verb] over a long period of | 13 |
|
| 29 | [verb] over a period of [noun] | 33 |
|
| 30 | [verb] over a period of [adj] | 32 |
|
