| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] over a period | 39 |
|
| 2 | [adv prt] over a period | 29 |
|
| 3 | up over a period | 9 |
|
| 4 | up over a period | 9 |
|
| 5 | gradually over a period | 7 |
|
| 6 | gradually over a period | 7 |
|
| 7 | out over a period | 6 |
|
| 8 | out over a period | 6 |
|
