| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [adv] long [noun] period | 9 |
|
| 2 | [art] [adv] long [noun sg] period | 9 |
|
| 3 | a [adv] long [noun] period | 8 |
|
| 4 | a [adv] long [noun] period | 7 |
|
| 5 | [art] [adv] long [noun] period | 7 |
|
