| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] and [art] period of | 16 |
|
| 2 | [noun] and [art] period of | 16 |
|
| 3 | [noun sg] and [art] period of | 14 |
|
| 4 | [noun] and a period of | 10 |
|
| 5 | [noun] and the period of | 6 |
|
