| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] a [adj] period | 425 |
|
| 2 | [verb] [prep] a [adj] period | 384 |
|
| 3 | [verb] [prep] a short [noun] | 362 |
|
| 4 | [verb] [prep] a short period | 51 |
|
| 5 | [verb] [prep] [art] short period | 43 |
|
| 6 | [verb] [prep] [art] short period | 43 |
|
| 7 | [verb] [prep] a short period | 38 |
|
