| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] a long period | 29 |
|
| 2 | [verb] [adv] a long period | 29 |
|
| 3 | [verb] [adv] [art] long period | 29 |
|
| 4 | [verb] over [art] long period | 28 |
|
| 5 | [verb] [adv prt] [art] long period | 28 |
|
| 6 | [verb] over [art] long period | 28 |
|
| 7 | [vb past] [adv] [art] long period | 8 |
|
| 8 | [vb -s] [adv] [art] long period | 7 |
|
