| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [verb] how | 897 |
|
| 2 | not [vb infin] how | 714 |
|
| 3 | not understand [adv] | 185 |
|
| 4 | not understand [Wh adv] | 171 |
|
| 5 | [adv] understand how | 148 |
|
| 6 | [not/n't] understand how | 121 |
|
| 7 | not understand how | 120 |
|
| 8 | not understand how | 59 |
|
| 9 | not understand how | 50 |
|
