| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [prep] a [noun] [unc] | 322 |
|
| 2 | [adv] [prep] a week [unc] | 18 |
|
| 3 | [adv] [prep] [art] week [unc] | 10 |
|
