| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who do [adv] [vb infin] [to-vb] a | 8 |
|
| 2 | who [vb base] not [vb infin] [to-vb] a | 8 |
|
| 3 | who [vb base] [adv] [vb infin] [to-vb] a | 8 |
|
| 4 | who [vb base] [not/n't] [vb infin] [to-vb] a | 8 |
|
