| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | period of [adj] [noun] | 1617 |
|
| 2 | period of [adj] [noun pl] | 752 |
|
| 3 | [noun] of [adj] days | 513 |
|
| 4 | [noun sg] of [adj] days | 414 |
|
| 5 | period of [adj] days | 95 |
|
| 6 | period of [adj] day | 89 |
|
| 7 | period [prep] [adj] days | 89 |
|
