| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] short period [prep] | 67 |
|
| 2 | [adv] short period [prep] | 62 |
|
| 3 | [adv] short period of | 54 |
|
| 4 | [adv] short period of | 54 |
|
| 5 | relatively short period [prep] | 26 |
|
| 6 | very short period [prep] | 22 |
|
| 7 | [adv] shorter period [prep] | 5 |
|
| 8 | [adv] short period in | 5 |
|
| 9 | [adv] short period in | 5 |
|
