| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun prp] [prep] [adj] years | 924 |
|
| 2 | [noun] [prep] several years | 327 |
|
| 3 | [noun prp] [prep] several [noun] | 141 |
|
| 4 | [noun prp] [prep] several [noun pl] | 138 |
|
| 5 | [noun prp] [prep] several year | 42 |
|
| 6 | [noun prp] [prep] several years | 42 |
|
