| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] year [noun] [noun] | 222 |
|
| 2 | [num] year [noun] [noun sg] | 173 |
|
| 3 | [num] [noun] [noun] period | 70 |
|
| 4 | [num] [noun sg] [noun] period | 63 |
|
| 5 | [num] year [noun] period | 17 |
|
| 6 | [num] year [noun] period | 16 |
|
| 7 | [adj] year [noun] period | 16 |
|
