| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] about a [noun sg] | 16 |
|
| 2 | [vb past] [prep] about a [noun] | 16 |
|
| 3 | [vb past] for about a [noun] | 12 |
|
| 4 | [vb past] for about a [noun] | 12 |
|
| 5 | [vb past] [prep] about a hour | 10 |
|
| 6 | [vb past] [prep] about a hour | 10 |
|
| 7 | [vb past] [prep] about an [noun] | 10 |
|
| 8 | [vb past] [prep] about a [noun] | 6 |
|
