| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [prep] at least a [noun sg] | 5 |
|
| 2 | [to-vb] [prep] at least a [noun] | 5 |
|
| 3 | [to-vb] for at least a [noun] | 5 |
|
| 4 | [to-vb] for at least a [noun] | 5 |
|
| 5 | [to-vb] [prep] at least a [noun] | 5 |
|
