| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [verb] for [adj] year | 113 |
|
| 2 | [adv] [verb] for [det] year | 31 |
|
| 3 | [adv] [verb] for several [noun] | 22 |
|
| 4 | [adv] [verb] for several year | 10 |
|
| 5 | [adv] [verb] [prep] several year | 8 |
|
| 6 | [adv] [verb] for several year | 8 |
|
