| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] years [noun] | 1660 |
|
| 2 | [num] years [noun] | 1147 |
|
| 3 | thirty [noun] [noun] | 231 |
|
| 4 | thirty [noun pl] [noun] | 106 |
|
| 5 | thirty year [noun] | 71 |
|
| 6 | thirty years [noun] | 57 |
|
