| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] [prep] a long period | 21 |
|
| 2 | [vb pp] [adv] [prep] a long period | 9 |
|
| 3 | [vb past] [adv] [prep] a long period | 6 |
|
| 4 | [adv] [verb] [prep] a long period | 7 |
|
| 5 | [adv] [vb pp] [prep] a long period | 7 |
|
| 6 | [adv] [prep] a [adv] long period | 5 |
|
| 7 | [adv] [prep] a [adv] long period | 5 |
|
| 8 | [adv] [prep] a long period [prep] | 16 |
|
| 9 | [adv] [prep] a long period [prep] | 16 |
|
| 10 | [adv] [prep] a long period of | 15 |
|
| 11 | [adv] [prep] a long period of | 15 |
|
