| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] a [det] [noun] | 1199 |
|
| 2 | [vb past] a [adj] year | 199 |
|
| 3 | [verb] a [det] year | 170 |
|
| 4 | [vb past] [art] [det] year | 75 |
|
