| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [adj] [unc] | 419 |
|
| 2 | [prep] a [adj] year | 309 |
|
| 3 | [prep] [adj] year [unc] | 171 |
|
| 4 | [prep] a year [unc] | 136 |
|
| 5 | a [adj] year [unc] | 55 |
|
