| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun] over a period [prep] | 109 |
|
| 2 | [adj] [noun] over a period of | 108 |
|
| 3 | [adj] [noun] over a period of | 108 |
|
| 4 | [adj] [noun] over a period [prep] | 70 |
|
| 5 | [adj] [noun sg] over a period [prep] | 57 |
|
| 6 | [adj] [noun pl] over a period [prep] | 48 |
|
| 7 | [det] [noun] over a period [prep] | 19 |
|
| 8 | [num] [noun] over a period [prep] | 15 |
|
