| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they should not be [vb pp] | 97 |
|
| 2 | they should not be used | 18 |
|
| 3 | they should not be use | 18 |
|
| 4 | they should not be allow | 5 |
|
| 5 | they should not be [v-ing] | 5 |
|
| 6 | they should not be regard | 5 |
|
| 7 | they should not be regarded | 5 |
|
| 8 | they should not be allowed | 5 |
|
