| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [not/n't] [v-ing] on a [noun sg] | 8 |
|
| 2 | [be] [not/n't] [v-ing] on a [noun sg] | 8 |
|
| 3 | [am/are] [not/n't] [v-ing] on a [noun sg] | 5 |
|
