| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [verb] the [noun pl] | 23 |
|
| 2 | should be [v-ing] the [noun pl] | 11 |
|
| 3 | should be [to-vb] the [noun pl] | 6 |
|
| 4 | should be [vb pp] the [noun pl] | 6 |
|
