| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb mod] not be used [verb] | 6 |
|
| 2 | they [modal v] not be used [to-vb] | 6 |
|
| 3 | they [modal v] not be used [verb] | 6 |
|
| 4 | they can not be used [verb] | 5 |
|
| 5 | they can not be used [verb] | 5 |
|
