| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] | 1182 |
|
| 2 | have a [adj] [prep] | 141 |
|
| 3 | have a period [prep] | 36 |
|
| 4 | have a [adj] period | 32 |
|
| 5 | have [adj] period [prep] | 15 |
|
