| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a limited period [prep] | 21 |
|
| 2 | [prep] a limited period [prep] | 21 |
|
| 3 | for a limited period [prep] | 19 |
|
| 4 | for a limited period [prep] | 19 |
|
| 5 | a limited period [prep] [noun sg] | 20 |
|
| 6 | a limited period [prep] [noun] | 20 |
|
| 7 | a limited period [prep] time | 18 |
|
| 8 | a limited period [prep] time | 18 |
|
