| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a period [prep] | 1753 |
|
| 2 | [prep] a period [prep] | 1753 |
|
| 3 | [prep] a [noun] between | 1225 |
|
| 4 | [prep] [art] period between | 107 |
|
| 5 | [prep] [art] period between | 107 |
|
| 6 | [prep] a period between | 7 |
|
| 7 | [prep] a period between | 7 |
|
