| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] over [art] period [prep] | 128 |
|
| 2 | [noun pl] over [art] period of | 111 |
|
| 3 | [noun pl] over a period [prep] | 105 |
|
| 4 | [noun pl] over a period [prep] | 105 |
|
| 5 | [noun pl] over the period [prep] | 23 |
|
| 6 | [noun pl] over the period [prep] | 23 |
|
