| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] to [be] | 17707 |
|
| 2 | [v-ing] be [verb] to | 170 |
|
| 3 | [v-ing] [verb] to [be] | 129 |
|
| 4 | [v-ing] be to [be] | 19 |
|
