| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not know [adv] [verb] [pron] | 183 |
|
| 2 | not [verb] how [verb] [pron] | 165 |
|
| 3 | [adv] know how [verb] [pron] | 160 |
|
| 4 | not [vb infin] how [verb] [pron] | 155 |
|
| 5 | not know how [verb] [pron] | 151 |
|
