| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [prep] [adv] a [noun] | 233 |
|
| 2 | [prep] [prep] [adv] a [noun sg] | 227 |
|
| 3 | [prep] [prep] [adv] [art] year | 40 |
|
| 4 | [prep] [prep] [adv] a year | 39 |
|
