| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a period of | 652 |
|
| 2 | [noun sg] [prep] a period of | 424 |
|
| 3 | place [prep] a [noun] of | 173 |
|
| 4 | place [prep] a [noun sg] of | 159 |
|
| 5 | place [prep] [art] period of | 11 |
|
| 6 | place [prep] a period of | 11 |
|
| 7 | place [prep] a period [prep] | 11 |
|
| 8 | place [prep] [art] period of | 11 |
|
| 9 | place [prep] a period of | 10 |
|
| 10 | place [prep] a period of | 10 |
|
