| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] a [adj] [noun] of | 5793 |
|
| 2 | [adv] [art] [adj] period of | 57 |
|
| 3 | [adv] [art] [adj] period of | 57 |
|
| 4 | [adv] a [adj] period [prep] | 53 |
|
| 5 | [adv] a [adj] period [prep] | 53 |
|
| 6 | [adv] a [adj] period of | 45 |
|
| 7 | [adv] a [adj] period of | 42 |
|
