| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] long period [prep] the | 9 |
|
| 2 | [prep] [art] long period [prep] the | 9 |
|
| 3 | [prep] [art] long period [prep] the | 9 |
|
| 4 | [prep] [art] long period [prep] the | 9 |
|
| 5 | [prep] a long period [prep] the | 8 |
|
| 6 | [prep] a long period [prep] the | 8 |
|
| 7 | [prep] [art] long period [prep] the | 6 |
|
| 8 | for [art] long period [prep] the | 5 |
|
| 9 | for [art] long period [prep] the | 5 |
|
