| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] for [noun] | 103 |
|
| 2 | a [adj] period for | 42 |
|
| 3 | [adj] period for [noun] | 41 |
|
| 4 | a [adj] period [noun] | 29 |
|
| 5 | a period for [noun] | 5 |
|
