| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be [v-ing] [to-vb] | 976 |
|
| 2 | be [v-ing] [to-vb] to | 815 |
|
| 3 | have be [v-ing] to | 507 |
|
| 4 | have be [to-vb] to | 20 |
|
