| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know what [pron] [be] [prep] | 63 |
|
| 2 | [not/n't] [verb] what [pron] [be] for | 11 |
|
| 3 | [adv] know what [pron] [be] for | 8 |
|
| 4 | [not/n't] know [pron] [pron] [be] for | 6 |
|
