| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] years ['s] [noun] | 1253 |
|
| 2 | thirty [noun] ['s] [noun] | 38 |
|
| 3 | thirty [noun pl] ['s] [noun] | 36 |
|
| 4 | thirty year ['s] [noun] | 25 |
|
| 5 | thirty years [unc] [noun] | 25 |
|
