| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] years ' [noun] | 1253 |
|
| 2 | [adj] [noun] ' duration | 100 |
|
| 3 | [adj] [noun pl] ' duration | 100 |
|
| 4 | [adj] year ' duration | 71 |
|
| 5 | [adj] years [unc] duration | 71 |
|
| 6 | [adj] years ' duration | 71 |
|
| 7 | [adj] years ['s] duration | 71 |
|
