| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [v-ing] at [art] | 185 |
|
| 2 | [modal v] not [be] [v-ing] [art] | 95 |
|
| 3 | [modal v] not [be] at [art] | 21 |
|
| 4 | [modal v] not [be] [v-ing] at | 15 |
|
| 5 | not [be] [v-ing] at [art] | 7 |
|
