| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] long periods [prep] [art] | 14 |
|
| 2 | [verb] [prep] long period [prep] [art] | 14 |
|
| 3 | [verb] for long period [prep] [art] | 13 |
|
| 4 | [verb] for long period [prep] [art] | 13 |
|
| 5 | [verb] [prep] long period [prep] the | 8 |
|
| 6 | [verb] [prep] long period [prep] a | 6 |
|
