| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [modal v] [vb infin] | 87 |
|
| 2 | [be] [verb] may [vb infin] | 75 |
|
| 3 | [be] [v-ing] may [verb] | 11 |
|
