| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [to-vb] | 31083 |
|
| 2 | [be] [to-vb] [vb infin] | 62 |
|
| 3 | [v-ing] [to-vb] [vb infin] | 54 |
|
| 4 | [be] [v-ing] [vb infin] | 32 |
|
