| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] [prep] several | 839 |
|
| 2 | [be] [verb] [prep] years | 192 |
|
| 3 | [verb] [prep] several years | 144 |
|
| 4 | [be] [verb] several years | 27 |
|
