| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [verb] [verb] [pron] | 169 |
|
| 2 | [vb mod] be [v-ing] [verb] [pron] | 133 |
|
| 3 | [modal v] be [v-ing] [verb] [pron] | 133 |
|
| 4 | should be [v-ing] [verb] [pron] | 12 |
|
| 5 | should [be] [v-ing] [verb] [pron] | 12 |
|
