| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] [noun] for a period | 21 |
|
| 2 | [prep] [adj] [noun] for a period | 14 |
|
| 3 | [prep] [adj] [noun sg] for a period | 12 |
|
| 4 | [prep] [adj] [noun pl] for a period | 8 |
|
| 5 | in [adj] [noun] for a period | 5 |
|
