| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | patient who did [not/n't] [vb infin] | 23 |
|
| 2 | patient [Wh pn] did not [vb infin] | 23 |
|
| 3 | patients [Wh pn] did [not/n't] [vb infin] | 22 |
|
| 4 | patient [Wh pn] did [not/n't] have | 6 |
|
