| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] of about [adj] | 1339 |
|
| 2 | [noun sg] of about [adj] | 1175 |
|
| 3 | period of [adv] [adj] | 148 |
|
| 4 | period [prep] about [adj] | 56 |
|
| 5 | period of about [adj] | 54 |
|
