| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [prep] a period of | 40 |
|
| 2 | [adj] [prep] a period of | 40 |
|
| 3 | [adj] over a [noun] of | 31 |
|
| 4 | [adj] over a [noun sg] of | 30 |
|
| 5 | [adj] over a period of | 27 |
|
| 6 | [adj] over [art] period of | 20 |
|
| 7 | [adj] over [art] period of | 20 |
|
| 8 | [adj] over a period [prep] | 19 |
|
| 9 | [adj] over a period [prep] | 19 |
|
| 10 | [adj] over a period of | 18 |
|
| 11 | [adj] over a period of | 18 |
|
| 12 | [adj] over a period of | 18 |
|
| 13 | [adj] over a period of | 18 |
|
