| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] long period | 317 |
|
| 2 | [prep] [art] long and | 148 |
|
| 3 | [prep] [art] period and | 64 |
|
| 4 | [art] long period and | 11 |
|
