| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [num] year | 491 |
|
| 2 | [prep] a [num] year | 491 |
|
| 3 | on a [num] [noun] | 289 |
|
| 4 | on a [num] [noun sg] | 231 |
|
| 5 | on a [adj] year | 52 |
|
| 6 | on [art] [num] year | 48 |
|
| 7 | on [art] [num] year | 48 |
|
| 8 | on a [num] year | 41 |
|
| 9 | on a [num] year | 40 |
|
| 10 | on a [num] year | 40 |
|
