| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] a short period of [noun sg] | 8 |
|
| 2 | [adv] a short period of [noun] | 8 |
|
| 3 | [adv] a short period of [noun] | 7 |
|
| 4 | [adv] a short period of time | 5 |
|
| 5 | [adv] a short period of time | 5 |
|
| 6 | only a short period of [noun] | 5 |
|
| 7 | only a short period of [noun] | 5 |
|
