| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] a | 27354 |
|
| 2 | [not/n't] [v-ing] [prep] | 4200 |
|
| 3 | [not/n't] [prep] a | 1837 |
|
| 4 | [not/n't] [v-ing] a | 752 |
|
