| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adv] [adj] period in | 8 |
|
| 2 | [prep] a [adv] [adj] period in | 8 |
|
| 3 | [prep] a [adv] [adj] period in | 8 |
|
| 4 | [prep] a [adv] [adj] period in | 8 |
|
