| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] over a long period | 35 |
|
| 2 | [verb] [adv] over a period | 34 |
|
| 3 | [verb] [adv] a long period | 29 |
|
| 4 | [adv] over a long period | 18 |
|
| 5 | [verb] [adv] over a long | 10 |
|
