| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] years | 23108 |
|
| 2 | [prep] several [noun] | 5873 |
|
| 3 | [prep] several [noun pl] | 5395 |
|
| 4 | [prep] [det] years | 3952 |
|
| 5 | [prep] several years | 731 |
|
| 6 | [prep] several years | 731 |
|
| 7 | [prep] several year | 731 |
|
