| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for [adj] years | 9030 |
|
| 2 | for [det] years | 2821 |
|
| 3 | for several [noun] | 1713 |
|
| 4 | for several [noun pl] | 1693 |
|
| 5 | [prep] several years | 731 |
|
| 6 | for several year | 527 |
|
| 7 | for several years | 527 |
|
