| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] about an [noun sg] | 14 |
|
| 2 | [vb -s] about an hour | 14 |
|
| 3 | [vb -s] about an hour | 14 |
|
| 4 | takes about an [noun] | 8 |
|
