| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for several [noun] | 1713 |
|
| 2 | for [adj] hour | 1551 |
|
| 3 | for [det] hour | 262 |
|
| 4 | [prep] several hour | 189 |
|
| 5 | for several hour | 138 |
|
