| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over a long period of time | 71 |
|
| 2 | over a short period of time | 7 |
|
| 3 | over a considerable period of time | 7 |
|
| 4 | over a prolonged period of time | 7 |
|
| 5 | over a given period of time | 5 |
|
