| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] longer period [prep] | 31 |
|
| 2 | [art] longer period [prep] | 30 |
|
| 3 | a longer period [prep] | 29 |
|
| 4 | [art] longer period of | 24 |
|
| 5 | [art] longer period of | 24 |
|
