| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | take place [prep] a period [prep] | 7 |
|
| 2 | [verb] place [prep] a period [prep] | 7 |
|
| 3 | place [prep] a [adj] period [prep] | 6 |
|
| 4 | place [prep] a [adj] period [prep] | 6 |
|
| 5 | place [prep] a period [prep] [noun] | 6 |
|
