| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be made over a period | 5 |
|
| 2 | [be] made over a period | 5 |
|
| 3 | made over a period of | 5 |
|
| 4 | made over a period of | 5 |
|
| 5 | made over a period [prep] | 5 |
|
| 6 | made over a period [prep] | 5 |
|
