| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] [noun] [unc] [noun] | 1419 |
|
| 2 | [prep] a [adj] [noun pl] [unc] [noun] | 356 |
|
| 3 | [prep] a [adj] week [unc] [noun] | 42 |
|
| 4 | [prep] [art] [adj] weeks [unc] [noun] | 29 |
|
