| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a period [prep] | 347 |
|
| 2 | have a period [prep] | 36 |
|
| 3 | have [verb] a period | 31 |
|
| 4 | have [verb] a [prep] | 12 |
|
| 5 | have [verb] period [prep] | 6 |
|
