| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] year ['s] [noun] | 4433 |
|
| 2 | [num] year ['s] [noun] | 1256 |
|
| 3 | 20 [noun] ['s] [noun] | 60 |
|
| 4 | 20 year [unc] [noun] | 45 |
|
| 5 | 20 year ['s] [noun] | 45 |
|
