| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] over a period [prep] | 18 |
|
| 2 | [coord] over [art] period of | 18 |
|
| 3 | [coord] over [art] period [prep] | 18 |
|
| 4 | [coord] over a period [prep] | 18 |
|
| 5 | and over [art] period [prep] | 12 |
|
