| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [vb infin] [art] few hours | 10 |
|
| 2 | [modal v] [vb infin] a few hours | 10 |
|
| 3 | [modal v] [vb infin] [art] few hours | 10 |
|
| 4 | [modal v] [vb infin] a few hours | 10 |
|
