| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] a long period | 91 |
|
| 2 | [adv] [verb] [prep] a long | 88 |
|
| 3 | [adv] [verb] [prep] a period | 54 |
|
| 4 | [adv] [prep] a long period | 36 |
|
| 5 | [adv] [verb] a long period | 6 |
|
