| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | after [adj] years | 1853 |
|
| 2 | [prep] several years | 731 |
|
| 3 | [prep] several years | 731 |
|
| 4 | after several [noun] | 233 |
|
| 5 | after several [noun pl] | 228 |
|
| 6 | after [det] years | 151 |
|
| 7 | after several year | 51 |
|
| 8 | after several years | 51 |
|
| 9 | after several years | 51 |
|
