| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [adj] period [prep] | 328 |
|
| 2 | [adv] [adj] period [prep] | 278 |
|
| 3 | [adv] short [noun] [prep] | 261 |
|
| 4 | [adv] short period [prep] | 79 |
|
