| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] years ['s] [noun] | 721 |
|
| 2 | [prep] [adj] [noun] ['s] duration | 75 |
|
| 3 | [prep] [adj] [noun pl] ['s] duration | 68 |
|
| 4 | [prep] [adj] year ['s] duration | 60 |
|
| 5 | [prep] [adj] years [unc] duration | 56 |
|
| 6 | [prep] [adj] years ['s] duration | 56 |
|
