| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] a year | 1674 |
|
| 2 | [adv] a year | 1618 |
|
| 3 | perhaps a [noun] | 705 |
|
| 4 | perhaps a [noun sg] | 696 |
|
| 5 | perhaps [art] year | 10 |
|
| 6 | perhaps a year | 7 |
|
| 7 | perhaps a year | 7 |
|
