| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] this period [prep] | 172 |
|
| 2 | [adv] [prep] this [prep] | 147 |
|
| 3 | [adv] [prep] this period | 83 |
|
| 4 | [adv] this period [prep] | 7 |
|
