| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adv] short period [prep] | 47 |
|
| 2 | [prep] [art] relatively short [noun] [prep] | 35 |
|
| 3 | [prep] [art] relatively short [noun sg] [prep] | 34 |
|
| 4 | [prep] [art] relatively [adj] period [prep] | 28 |
|
| 5 | [prep] [art] relatively short period [prep] | 19 |
|
| 6 | [prep] [art] relatively short period [prep] | 19 |
|
