| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [to-vb] [verb] | 1128 |
|
| 2 | [be] [verb] [to-vb] [vb infin] | 183 |
|
| 3 | [be] [v-ing] [verb] [vb infin] | 21 |
|
