| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] long period of | 240 |
|
| 2 | [adv] [art] period of | 136 |
|
| 3 | [adv] [art] long period | 45 |
|
| 4 | [adv] long period of | 26 |
|
