| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | year and a | 269 |
|
| 2 | year [coord] a | 214 |
|
| 3 | years [coord] a | 73 |
|
| 4 | year or a | 12 |
|
| 5 | year but a | 5 |
|
