| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | must [be] avoided at all | 9 |
|
| 2 | must be avoided at [adj] | 9 |
|
| 3 | must [be] avoided at all | 9 |
|
| 4 | must [be] avoided at [det] | 9 |
|
