| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] period of [noun] | 932 |
|
| 2 | [adj] [adj] of [noun] | 336 |
|
| 3 | [adj] [adj] period of | 36 |
|
| 4 | [adj] [adj] period [noun] | 12 |
|
