| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] short period [prep] | 79 |
|
| 2 | [adv] short period [prep] | 79 |
|
| 3 | [adv] [adj] period in | 59 |
|
| 4 | [adv] short [noun] in | 29 |
|
| 5 | [adv] short period in | 8 |
|
| 6 | [adv] short period in | 8 |
|
