| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [modal v] [vb infin] | 513 |
|
| 2 | [be] [v-ing] [modal v] | 252 |
|
| 3 | [be] [modal v] [vb infin] | 230 |
|
| 4 | [be] [v-ing] [vb infin] | 32 |
|
