| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so [adv] [art] period | 15 |
|
| 2 | so [adv] a period | 15 |
|
| 3 | so [adv] [art] period | 15 |
|
| 4 | so [adv] [art] period | 15 |
|
| 5 | so [adv] a period | 15 |
|
| 6 | so long [art] period | 8 |
|
| 7 | so long [art] period | 8 |
|
| 8 | so short [art] period | 5 |
|
| 9 | so short [art] period | 5 |
|
