| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] years ['s] [noun] | 1253 |
|
| 2 | 15 [noun] ['s] [noun] | 46 |
|
| 3 | 15 [noun pl] ['s] [noun] | 41 |
|
| 4 | 15 years [unc] [noun] | 29 |
|
| 5 | 15 year ['s] [noun] | 29 |
|
