| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [prep] [adj] years it | 21 |
|
| 2 | [noun] [prep] [num] years it | 16 |
|
| 3 | [noun] of [adj] years it | 12 |
|
| 4 | [noun] [prep] three years it | 6 |
|
| 5 | [noun] [prep] three years it | 6 |
|
| 6 | period [prep] [adj] years it | 5 |
|
| 7 | period [prep] [adj] years it | 5 |
|
