| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [adv] | 93 |
|
| 2 | a [adj] [adv] to | 61 |
|
| 3 | a [adj] period to | 16 |
|
| 4 | [adj] period [adv] to | 16 |
|
| 5 | a period [adv] to | 6 |
|
