| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [adv] [verb] a period [prep] | 9 |
|
| 2 | have [adv] [vb pp] a period [prep] | 9 |
|
| 3 | have [adv] [verb] a period [prep] | 6 |
|
| 4 | have [adv] had a period [prep] | 5 |
|
| 5 | have [adv] [verb] a period of | 5 |
|
| 6 | have [adv] have a period [prep] | 5 |
|
