| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] year ' [noun] | 684 |
|
| 2 | [be] [prep] [num] year ' | 59 |
|
| 3 | [be] [prep] [num] year [noun] | 17 |
|
| 4 | [be] [num] year ' [noun] | 10 |
|
