| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] not [v-ing] [pron] | 1795 |
|
| 2 | [be] [v-ing] [pron] back | 144 |
|
| 3 | [be] not [v-ing] back | 108 |
|
| 4 | not [v-ing] [pron] back | 16 |
|
