| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] a time | 464 |
|
| 2 | so [prep] a [noun] | 312 |
|
| 3 | so [prep] a [noun sg] | 302 |
|
| 4 | so [prep] [art] time | 72 |
|
| 5 | so [prep] [art] time | 72 |
|
| 6 | so [prep] a time | 8 |
|
| 7 | so [prep] a time | 8 |
|
