| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] who [vb base] at a | 8 |
|
| 2 | [noun pl] who [vb base] at a | 7 |
|
| 3 | who [vb base] at a [noun sg] | 6 |
|
| 4 | who [vb base] at a [noun] | 6 |
|
