| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so [adv] a [noun] | 414 |
|
| 2 | so [adv] a [noun sg] | 408 |
|
| 3 | [adv] [adv] a period | 32 |
|
| 4 | so [adv] a period | 15 |
|
| 5 | so [adv] [art] period | 15 |
|
| 6 | so [adv] a period | 15 |
|
